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Okay, this is the hardest part of the whole project…picking your topic. But here are some ideas to get you started. Even if you don’t like any, they may inspire you to come up with one of your own. Remember, check all project ideas with your teacher and parents, and don’t do any project that would hurt or scare people or animals. Good luck!

  • Does music affect on animal behavior?
  • Does the color of food or drinks affect whether or not we like them?
  • Where are the most germs in your school? ( CLICK for more info. )
  • Does music have an affect on plant growth?
  • Which kind of food do dogs (or any animal) prefer best?
  • Which paper towel brand is the strongest?
  • What is the best way to keep an ice cube from melting?
  • What level of salt works best to hatch brine shrimp?
  • Can the food we eat affect our heart rate?
  • How effective are child-proof containers and locks.
  • Can background noise levels affect how well we concentrate?
  • Does acid rain affect the growth of aquatic plants?
  • What is the best way to keep cut flowers fresh the longest?
  • Does the color of light used on plants affect how well they grow?
  • What plant fertilizer works best?
  • Does the color of a room affect human behavior?
  • Do athletic students have better lung capacity?
  • What brand of battery lasts the longest?
  • Does the type of potting soil used in planting affect how fast the plant grows?
  • What type of food allow mold to grow the fastest?
  • Does having worms in soil help plants grow faster?
  • Can plants grow in pots if they are sideways or upside down?
  • Does the color of hair affect how much static electricity it can carry? (test with balloons)
  • How much weight can the surface tension of water hold?
  • Can some people really read someone else’s thoughts?
  • Which soda decays fallen out teeth the most?
  • What light brightness makes plants grow the best?
  • Does the color of birdseed affect how much birds will eat it?
  • Do natural or chemical fertilizers work best?
  • Can mice learn? (you can pick any animal)
  • Can people tell artificial smells from real ones?
  • What brands of bubble gum produce the biggest bubbles?
  • Does age affect human reaction times?
  • What is the effect of salt on the boiling temperature of water?
  • Does shoe design really affect an athlete’s jumping height?
  • What type of grass seed grows the fastest?
  • Can animals see in the dark better than humans?

Didn’t see one you like? Don’t worry…look over them again and see if they give you an idea for your own project that will work for you. Remember, find something that interests you, and have fun with it.

To download and print this list of ideas CLICK HERE .

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Making Science Fun, Easy to Teach and Exciting to Learn!

Science Experiments

35 Easy Science Experiments You Can Do Today!

Looking for easy science experiments to do at home or in the classroom? You’re in luck because we’ve got over 35 easy science activities for kids that will help you make science fun for all ages. 

Most of these simple science experiments for kids are easy to prepare, quick to perform, and use household items or inexpensive materials you can find almost anywhere. To connect the fun to the “why it works” you’ll find an easy to teach explanation with every experiment!

Musical Jars Science Experiment 

science experiment report ideas

This super easy experiment is simple as it is fun! Kids make their own musical instruments with clear jars and water then investigate sound waves, pitch, and more.

When the experiment is complete, use the colorful new “instrument” for a fun music lesson. Kids can play and take turns to “name that tune”!

Detailed Instructions & Video Tutorial ->  Musical Jars Science Experiment

Viscosity of Liquids Science Experiment

science experiment report ideas

Viscosity may be a confusing term for kids at first, but this super easy experiment can help them see viscosity in action!

With marbles, clear jars, and a few household materials, kids will make predictions, record data, and compare the results while they test high and low density liquids.

Detailed Instructions & Video Tutorial ->   Viscosity Science Experiment

Floating Egg Science Experiment

Floating Egg Science Experiment

Can a solid egg float? Kids can find the answer and understand why with this quick science experiment. 

Discover just how easy it can be to make a raw egg float while testing the laws of density. We’ve included additional ideas to try so kids can make predictions and test the concept further.

Detailed Instructions & Video Tutorial ->   Floating Egg Science Experiment

Paper Towel Dry Under Water Experiment

science experiment report ideas

Is it possible to keep a paper towel dry even when submerging it under water? The answer is a surprising “yes,” if you use science to help!

Start with the properties of your materials, make a prediction, then explore matter, density, volume, and more.

Detailed Instructions & Video Tutorial ->   Paper Towel Dry Under Water Experiment

Mixing Oil & Water Science Experiment

science experiment report ideas

This simple experiment for kids helps them better understand density and the changes that happen when adding an emulsifier to the mix. 

Detailed Instructions & Video Tutorial ->   Mixing Oil & Water Experiment

Will it Float or Sink Science Experiment

Will it sink or will it float? This fun experiment challenges what students think they know about household items!

Students record their hypothesis for each item then test it to compare what they think will happen against their observations.

Detailed Instructions & Video Tutorial -> Float or Sink Science Experiment

Water Temperature Science Experiment

science experiment report ideas

What does thermal energy look like? In this easy science experiment, kids are able to see thermal energy as they explore the concept in action.

With clear jars and food coloring, students can quickly see how molecules move differently through hot and cold water.

Detailed Instructions & Video Tutorial -> Water Temperature Science Experiment

Balloon Blow-up Science Experiment

Balloon Blow Up Science Experiment

Kids will discover how matter reacts when heated and cooled as they watch with surprise as baking soda and vinegar blow the balloon up before their eyes.

Detailed Instructions & Video Tutorial -> Balloon Blow-up Science Experiment

Floating Ping Pong Ball Science Experiment

science experiment report ideas

Kids will giggle with joy with this super easy experiment. With only a ping pong ball and a hair dryer, students will have a great time while exploring Bernoulli’s Principle in action. 

We’ve included additional ideas to further explore the concept with different objects and observe the change in results.

Detailed Instructions & Video Tutorial -> Floating Ping Pong Ball Science Experiment

Hair Stand on End Science Experiment

science experiment report ideas

It’s especially fun for those who’ve never seen static electricity in action before!

Detailed Instructions & Video Tutorial -> Hair Stand on End Science Experiment

Oil Bubbles in Water Science Experiment

science experiment report ideas

Kids explore density and experience some chemistry when creating oil bubbles in water with everyday household items.

This experiment is particularly fun when kids see that they’ve made what looks like a lava lamp!

Detailed Instructions & Video Tutorial ->  Oil Bubbles in Water Science Experiment

Color Changing Water Science Experiment

science experiment report ideas

Kids will be surprised as they watch a new color being “created” without mixing! Using only a clear bowl and glass, some food coloring, and water, this super easy science experiment is quick and easy with a huge wow factor. 

Try it with yellow and blue to follow along with our demonstration video then try different primary color combinations and explore the results.

Detailed Instructions & Video Tutorial ->  Color Changing Water Science Experiment

Magnetic Paper Clip Chain Science Experiment

science experiment report ideas

It may seem a bit like magic but it’s actually science! It’s not hard to capture your kids’ attention with this quick and easy science experiment as they watch paper clips “stick” together and form a chain!

Perfect for younger children, the experiment only takes a few minutes and is a fun way to explore the concept of magnetic transference.

Detailed Instructions & Video Tutorial ->  Magnetic Paper Clip Chain Science Experiment

Is it Magnetic Science Experiment

With only a magnet and a few household items, kids will make and record their predictions, test and observe, then compare what they think is magnetic against the results.

Simple and quick, but some of the results may surprise your students!

Cloud in a Jar Experiment

science experiment report ideas

This simple experiment only requires a few materials but really holds student attention as a cloud forms before their eyes!

Kids will learn new weather vocabulary as they explore how physical changes and reactions happen as clouds begin to take form. We’ve also included a helpful chart on the types of clouds.

Detailed Instructions & Video Tutorial ->  Cloud in a Jar Science Experiment

Magic Milk Science Experiment

science experiment report ideas

Create a dancing rainbow of colors with this easy science experiment for kids!

Using only a few ordinary kitchen items, your students can create a color explosion in ordinary milk when they add our special ingredient. (Hint: The special ingredient (soap!) includes hydrophilic and hydrophobic molecules that make the magic happen!)

Detailed Instructions & Video Tutorial ->  Magic Milk Science Experiment

Walking Water Science Experiment

Walking Water Science Experiment

Water can’t really walk upwards against gravity, but this cool science experiment makes it seem like it can! 

Kids are able to see the capillary action process and learn how attraction and adhesive forces in action allow water to move out of one glass into another. 

Detailed Instructions & Video Tutorial -> Walking Water Science Experiment

Light Refraction Science Experiment

Light Refraction Science Experiment

The results of this easy science experiment are so amazing, it makes kids (and adults) think it must be magic!

Young scientists watch in surprise while they see an arrow change directions instantly. Investigating refraction couldn’t be more fun!

Detailed Instructions & Video Tutorial -> Light Refraction Science Experiment

Dancing Raisins Experiment

Dancing Raisins Science Experiment - Step (3)

Learn about the reactions of buoyancy and density in this simple science activity for kids. 

They may not need dancing shoes, but give them a glass of soda pop and the raisins in this fun experiment love to dance!

Detailed Instructions & Video Tutorial -> Dancing Raisins Science Experiment

See Sound Experiment

How to See Sound Science Experiment

Kids love this experiment because they are encouraged to drum loudly so they can “see” sound waves in action!

Detailed Instructions & Video Tutorial -> See Sound Science Experiment

Elephant Toothpaste Science Experiment

science experiment report ideas

Grab some giant brushes and get ready to make elephant toothpaste! Although you might not be able to get an elephant excited by this super easy experiment, kids love it!

The impressive and quick results created by the chemical reaction and the heat released in the process makes an abundant amount of fun and colorful foam!

Detailed Instructions & Video Tutorial -> Elephant Toothpaste Science Experiment

Upside Down Glass of Water Science Experiment

Upside Down Water Glass Science Experiment

We all know what happens when we turn a glass of water upside down, but what if I told you you can do it without the water spilling out?

The experiment only requires a few common items and you’ll be amazed by the results of air pressure in action!

Detailed Instructions & Video Tutorial -> Upside Down Glass of Water Science Experiment

Pick up Ball with a Jar Science Experiment

science experiment report ideas

It almost seems like magic but with the help of science, you can pick up a ball with an open jar!

Instead of magic, this easy science activity uses centripetal force and practice to do what seems like the impossible. 

Detailed Instructions & Video Tutorial -> Pick up Ball with a Jar Experiment

Will It Melt Science Experiment

Can you guess which items will melt? This easy outside experiment challenges what students think they know about the effects of the sun.

Pepper Move Science Experiment

Pepper Move Science Experiment

Can you make pepper move and zoom away with just a light touch of your finger? With science you can!

This experiment only takes a few quick minutes from beginning to end, but the reaction caused by surface tension makes kids want to do it over and over. 

Detailed Instructions & Video Tutorial ->  Pepper Move Science Experiment

Crush a Plastic Bottle Science Experiment

science experiment report ideas

Go for it, crush that bottle, but don’t touch it! Although it usually can’t be seen or touched, air pressure is pushing against all surfaces at all times.

With this easy science activity kids can see air pressure at work when they watch a bottle crushes itself!

Detailed Instructions & Video Tutorial -> Crush a Plastic Bottle Science Experiment

Egg in Vinegar Science Experiment

science experiment report ideas

This vinegar science experiment will have your eggs and kids bouncing (with excitement!) before you know it!

Kids can watch and explore the results of chemical reactions as the egg changes from something that seems solid into what feels like something bouncy!

Detailed Instructions & Video Tutorial -> Egg in Vinegar Science Experiment

Straw Through a Potato Science Experiment

science experiment report ideas

Can you make a normal plastic straw go into a raw, solid potato? It seems like something impossible, but science can easily make it possible!

Pick your potatoes then let kids try their strength as they explore air pressure with this super easy experiment.

Detailed Instructions & Video Tutorial -> Straw Through a Potato Science Experiment

Rainbow in a Jar Science Experiment

science experiment report ideas

With only a few household items, they’ll explore mass, volume, and density with every color layer!

Detailed Instructions & Video Tutorial -> Rainbow in a Jar Experiment

Tornado in a Bottle Science Experiment

science experiment report ideas

Kids can have fun while learning more about centripetal force with this fun experiment.

With a little muscle and science, kids watch with amazement as they create their own glitter cyclone in a bottle as the centripetal force vortex appears.

Detailed Instructions & Video Tutorial -> Tornado in a Bottle Science Experiment

Why Doesn’t the Water Leak Science Experiment

Water Doesn't Leak Science Experiment

Can you poke holes in a plastic bag full of water without the water leaking out? With this super easy science activity you can!

Kids are stunned as they learn about polymers and how they can do what seems to be impossible.

Detailed Instructions & Video Tutorial -> Why Doesn’t the Water Leak Science Experiment

Use a Bottle to Blow-up a Balloon Experiment

Use a Bottle to Blow-up a Balloon Science Experiment

Is it possible to blow up a balloon with only water and science? 

In this super easy experiment, kids learn more about how matter behaves as they watch a balloon inflate and deflate as a result of matter being heated and cooled.

Detailed Instructions & Video Tutorial -> Use a Bottle to Blow-up a Balloon Experiment

Orange Float Science Experiment

science experiment report ideas

Kids explore buoyancy as they learn about and test density in this sink or float science activity.

While it only takes a few minutes, this super easy experiment invites kids to predict what they think will happen then discuss why the heavier orange floats!

Detailed Instructions & Video Tutorial -> Orange Float Science Experiment

Pick up Ice with String Science Experiment

science experiment report ideas

With only a few household items, kids learn about freezing temperatures and the results they create in saltwater versus freshwater.

Detailed Instructions & Video Tutorial -> Pick Up Ice with String Science Experiment

Color Changing Walking Water Experiment

science experiment report ideas

Using the concepts explored in our popular Walking Water Science Experiment, kids will see color walk from one glass to another and change colors as it goes!

The quick experiment seems to defy gravity like magic, but don’t worry, kids can find out how science makes it work!

Detailed Instructions & Video Tutorial -> Color Changing Walking Water Experiment

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PrepScholar

Choose Your Test

Sat / act prep online guides and tips, 37 cool science experiments for kids to do at home.

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General Education

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Are you looking for cool science experiments for kids at home or for class? We've got you covered! We've compiled a list of 37 of the best science experiments for kids that cover areas of science ranging from outer space to dinosaurs to chemical reactions. By doing these easy science experiments, kids will make their own blubber and see how polar bears stay warm, make a rain cloud in a jar to observe how weather changes, create a potato battery that'll really power a lightbulb, and more.

Below are 37 of the best science projects for kids to try. For each one we include a description of the experiment, which area(s) of science it teaches kids about, how difficult it is (easy/medium/hard), how messy it is (low/medium/high), and the materials you need to do the project. Note that experiments labelled "hard" are definitely still doable; they just require more materials or time than most of these other science experiments for kids.

#1: Insect Hotels

  • Teaches Kids About: Zoology
  • Difficulty Level: Medium
  • Messiness Level: Medium

Insect hotels can be as simple (just a few sticks wrapped in a bundle) or as elaborate as you'd like, and they're a great way for kids to get creative making the hotel and then get rewarded by seeing who has moved into the home they built. After creating a hotel with hiding places for bugs, place it outside (near a garden is often a good spot), wait a few days, then check it to see who has occupied the "rooms." You can also use a bug ID book or app to try and identify the visitors.

  • Materials Needed
  • Shadow box or other box with multiple compartments
  • Hot glue gun with glue
  • Sticks, bark, small rocks, dried leaves, bits of yarn/wool, etc.

insect hotel

#2: DIY Lava Lamp

  • Teaches Kids About: Chemical reactions
  • Difficulty Level: Easy

In this quick and fun science experiment, kids will mix water, oil, food coloring, and antacid tablets to create their own (temporary) lava lamp . Oil and water don't mix easily, and the antacid tablets will cause the oil to form little globules that are dyed by the food coloring. Just add the ingredients together and you'll end up with a homemade lava lamp!

  • Vegetable oil
  • Food coloring
  • Antacid tablets

#3: Magnetic Slime

  • Teaches Kids About: Magnets
  • Messiness Level: High (The slime is black and will slightly dye your fingers when you play with it, but it washes off easily.)

A step up from silly putty and Play-Doh, magnetic slime is fun to play with but also teaches kids about magnets and how they attract and repel each other. Some of the ingredients you aren't likely to have around the house, but they can all be purchased online. After mixing the ingredients together, you can use the neodymium magnet (regular magnets won't be strong enough) to make the magnetic slime move without touching it!

  • Liquid starch
  • Adhesive glue
  • Iron oxide powder
  • Neodymium (rare earth) magnet

#4: Baking Soda Volcanoes

  • Teaches Kids About: Chemical reactions, earth science
  • Difficulty Level: Easy-medium
  • Messiness Level: High

Baking soda volcanoes are one of the classic science projects for kids, and they're also one of the most popular. It's hard to top the excitement of a volcano erupting inside your home. This experiment can also be as simple or in-depth as you like. For the eruption, all you need is baking soda and vinegar (dishwashing detergent adds some extra power to the eruption), but you can make the "volcano" as elaborate and lifelike as you wish.

  • Baking soda
  • Dishwashing detergent
  • Large mason jar or soda bottle
  • Playdough or aluminum foil to make the "volcano"
  • Additional items to place around the volcano (optional)
  • Food coloring (optional)

#5: Tornado in a Jar

  • Teaches Kids About: Weather
  • Messiness Level: Low

This is one of the quick and easy and science experiments for kids to teach them about weather. It only takes about five minutes and a few materials to set up, but once you have it ready you and your kids can create your own miniature tornado whose vortex you can see and the strength of which you can change depending on how quickly you swirl the jar.

  • Glitter (optional)

#6: Colored Celery Experiment

  • Teaches Kids About: Plants

This celery science experiment is another classic science experiment that parents and teachers like because it's easy to do and gives kids a great visual understanding of how transpiration works and how plants get water and nutrients. Just place celery stalks in cups of colored water, wait at least a day, and you'll see the celery leaves take on the color of the water. This happens because celery stalks (like other plants) contain small capillaries that they use to transport water and nutrients throughout the plant.

  • Celery stalks (can also use white flowers or pale-colored cabbage)

#7: Rain Cloud in a Jar

This experiment teaches kids about weather and lets them learn how clouds form by making their own rain cloud . This is definitely a science project that requires adult supervision since it uses boiling water as one of the ingredients, but once you pour the water into a glass jar, the experiment is fast and easy, and you'll be rewarded with a little cloud forming in the jar due to condensation.

  • Glass jar with a lid
  • Boiling water
  • Aerosol hairspray

body_rockcandy

#8: Edible Rock Candy

  • Teaches Kids About: Crystal formation

It takes about a week for the crystals of this rock candy experiment to form, but once they have you'll be able to eat the results! After creating a sugar solution, you'll fill jars with it and dangle strings in them that'll slowly become covered with the crystals. This experiment involves heating and pouring boiling water, so adult supervision is necessary, once that step is complete, even very young kids will be excited to watch crystals slowly form.

  • Large saucepan
  • Clothespins
  • String or small skewers
  • Candy flavoring (optional)

#9: Water Xylophone

  • Teaches Kids About: Sound waves

With just some basic materials you can create your own musical instrument to teach kids about sound waves. In this water xylophone experiment , you'll fill glass jars with varying levels of water. Once they're all lined up, kids can hit the sides with wooden sticks and see how the itch differs depending on how much water is in the jar (more water=lower pitch, less water=higher pitch). This is because sound waves travel differently depending on how full the jars are with water.

  • Wooden sticks/skewers

#10: Blood Model in a Jar

  • Teaches Kids About: Human biology

This blood model experiment is a great way to get kids to visual what their blood looks like and how complicated it really is. Each ingredient represents a different component of blood (plasma, platelets, red blood cells, etc.), so you just add a certain amount of each to the jar, swirl it around a bit, and you have a model of what your blood looks like.

  • Empty jar or bottle
  • Red cinnamon candies
  • Marshmallows or dry white lima beans
  • White sprinkles

#11: Potato Battery

  • Teaches Kids About: Electricity
  • Difficulty Level: Hard

Did you know that a simple potato can produce enough energy to keep a light bulb lit for over a month? You can create a simple potato battery to show kids. There are kits that provide all the necessary materials and how to set it up, but if you don't purchase one of these it can be a bit trickier to gather everything you need and assemble it correctly. Once it's set though, you'll have your own farm grown battery!

  • Fresh potato
  • Galvanized nail
  • Copper coin

body_pulley

#12: Homemade Pulley

  • Teaches Kids About: Simple machines

This science activity requires some materials you may not already have, but once you've gotten them, the homemade pulley takes only a few minutes to set up, and you can leave the pulley up for your kids to play with all year round. This pulley is best set up outside, but can also be done indoors.

  • Clothesline
  • 2 clothesline pulleys

#13: Light Refraction

  • Teaches Kids About: Light

This light refraction experiment takes only a few minutes to set up and uses basic materials, but it's a great way to show kids how light travels. You'll draw two arrows on a sticky note, stick it to the wall, then fill a clear water bottle with water. As you move the water bottle in front of the arrows, the arrows will appear to change the direction they're pointing. This is because of the refraction that occurs when light passes through materials like water and plastic.

  • Sticky note
  • Transparent water bottle

#14: Nature Journaling

  • Teaches Kids About: Ecology, scientific observation

A nature journal is a great way to encourage kids to be creative and really pay attention to what's going on around them. All you need is a blank journal (you can buy one or make your own) along with something to write with. Then just go outside and encourage your children to write or draw what they notice. This could include descriptions of animals they see, tracings of leaves, a drawing of a beautiful flower, etc. Encourage your kids to ask questions about what they observe (Why do birds need to build nests? Why is this flower so brightly colored?) and explain to them that scientists collect research by doing exactly what they're doing now.

  • Blank journal or notebook
  • Pens/pencils/crayons/markers
  • Tape or glue for adding items to the journal

#15: DIY Solar Oven

  • Teaches Kids About: Solar energy

This homemade solar oven definitely requires some adult help to set up, but after it's ready you'll have your own mini oven that uses energy from the sun to make s'mores or melt cheese on pizza. While the food is cooking, you can explain to kids how the oven uses the sun's rays to heat the food.

  • Aluminum foil
  • Knife or box cutter
  • Permanent marker
  • Plastic cling wrap
  • Black construction paper

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#16: Animal Blubber Simulation

  • Teaches Kids About: Ecology, zoology

If your kids are curious about how animals like polar bears and seals stay warm in polar climates, you can go beyond just explaining it to them; you can actually have them make some of their own blubber and test it out. After you've filled up a large bowl with ice water and let it sit for a few minutes to get really cold, have your kids dip a bare hand in and see how many seconds they can last before their hand gets too cold. Next, coat one of their fingers in shortening and repeat the experiment. Your child will notice that, with the shortening acting like a protective layer of blubber, they don't feel the cold water nearly as much.

  • Bowl of ice water

#17: Static Electricity Butterfly

This experiment is a great way for young kids to learn about static electricity, and it's more fun and visual than just having them rub balloons against their heads. First you'll create a butterfly, using thick paper (such as cardstock) for the body and tissue paper for the wings. Then, blow up the balloon, have the kids rub it against their head for a few seconds, then move the balloon to just above the butterfly's wings. The wings will move towards the balloon due to static electricity, and it'll look like the butterfly is flying.

  • Tissue paper
  • Thick paper
  • Glue stick/glue

#18: Edible Double Helix

  • Teaches Kids About: Genetics

If your kids are learning about genetics, you can do this edible double helix craft to show them how DNA is formed, what its different parts are, and what it looks like. The licorice will form the sides or backbone of the DNA and each color of marshmallow will represent one of the four chemical bases. Kids will be able to see that only certain chemical bases pair with each other.

  • 2 pieces of licorice
  • 12 toothpicks
  • Small marshmallows in 4 colors (9 of each color)
  • 5 paperclips

#19: Leak-Proof Bag

  • Teaches Kids About: Molecules, plastics

This is an easy experiment that'll appeal to kids of a variety of ages. Just take a zip-lock bag, fill it about ⅔ of the way with water, and close the top. Next, poke a few sharp objects (like bamboo skewers or sharp pencils) through one end and out the other. At this point you may want to dangle the bag above your child's head, but no need to worry about spills because the bag won't leak? Why not? It's because the plastic used to make zip-lock bags is made of polymers, or long chains of molecules that'll quickly join back together when they're forced apart.

  • Zip-lock bags
  • Objects with sharp ends (pencils, bamboo skewers, etc.)

body_leaves

#20: How Do Leaves Breathe?

  • Teaches Kids About: Plant science

It takes a few hours to see the results of this leaf experiment , but it couldn't be easier to set up, and kids will love to see a leaf actually "breathing." Just get a large-ish leaf, place it in a bowl (glass works best so you can see everything) filled with water, place a small rock on the leaf to weigh it down, and leave it somewhere sunny. Come back in a few hours and you'll see little bubbles in the water created when the leaf releases the oxygen it created during photosynthesis.

  • Large bowl (preferably glass)
  • Magnifying glass (optional)

#21: Popsicle Stick Catapults

Kids will love shooting pom poms out of these homemade popsicle stick catapults . After assembling the catapults out of popsicle sticks, rubber bands, and plastic spoons, they're ready to launch pom poms or other lightweight objects. To teach kids about simple machines, you can ask them about how they think the catapults work, what they should do to make the pom poms go a farther/shorter distance, and how the catapult could be made more powerful.

  • Popsicle sticks
  • Rubber bands
  • Plastic spoons
  • Paint (optional)

#22: Elephant Toothpaste

You won't want to do this experiment near anything that's difficult to clean (outside may be best), but kids will love seeing this " elephant toothpaste " crazily overflowing the bottle and oozing everywhere. Pour the hydrogen peroxide, food coloring, and dishwashing soap into the bottle, and in the cup mix the yeast packet with some warm water for about 30 seconds. Then, add the yeast mixture to the bottle, stand back, and watch the solution become a massive foamy mixture that pours out of the bottle! The "toothpaste" is formed when the yeast removed the oxygen bubbles from the hydrogen peroxide which created foam. This is an exothermic reaction, and it creates heat as well as foam (you can have kids notice that the bottle became warm as the reaction occurred).

  • Clean 16-oz soda bottle
  • 6% solution of hydrogen peroxide
  • 1 packet of dry yeast
  • Dishwashing soap

#23: How Do Penguins Stay Dry?

Penguins, and many other birds, have special oil-producing glands that coat their feathers with a protective layer that causes water to slide right off them, keeping them warm and dry. You can demonstrate this to kids with this penguin craft by having them color a picture of a penguin with crayons, then spraying the picture with water. The wax from the crayons will have created a protective layer like the oil actual birds coat themselves with, and the paper won't absorb the water.

  • Penguin image (included in link)
  • Spray bottle
  • Blue food coloring (optional)

body_erosion

#24: Rock Weathering Experiment

  • Teaches Kids About: Geology

This mechanical weathering experiment teaches kids why and how rocks break down or erode. Take two pieces of clay, form them into balls, and wrap them in plastic wrap. Then, leave one out while placing the other in the freezer overnight. The next day, unwrap and compare them. You can repeat freezing the one piece of clay every night for several days to see how much more cracked and weathered it gets than the piece of clay that wasn't frozen. It may even begin to crumble. This weathering also happens to rocks when they are subjected to extreme temperatures, and it's one of the causes of erosion.

  • Plastic wrap

#25: Saltwater Density

  • Teaches Kids About: Water density

For this saltwater density experiment , you'll fill four clear glasses with water, then add salt to one glass, sugar to one glass, and baking soda to one glass, leaving one glass with just water. Then, float small plastic pieces or grapes in each of the glasses and observe whether they float or not. Saltwater is denser than freshwater, which means some objects may float in saltwater that would sink in freshwater. You can use this experiment to teach kids about the ocean and other bodies of saltwater, such as the Dead Sea, which is so salty people can easily float on top of it.

  • Four clear glasses
  • Lightweight plastic objects or small grapes

#26: Starburst Rock Cycle

With just a package of Starbursts and a few other materials, you can create models of each of the three rock types: igneous, sedimentary, and metamorphic. Sedimentary "rocks" will be created by pressing thin layers of Starbursts together, metamorphic by heating and pressing Starbursts, and igneous by applying high levels of heat to the Starbursts. Kids will learn how different types of rocks are forms and how the three rock types look different from each other.

  • Toaster oven

#27: Inertia Wagon Experiment

  • Teaches Kids About: Inertia

This simple experiment teaches kids about inertia (as well as the importance of seatbelts!). Take a small wagon, fill it with a tall stack of books, then have one of your children pull it around then stop abruptly. They won't be able to suddenly stop the wagon without the stack of books falling. You can have the kids predict which direction they think the books will fall and explain that this happens because of inertia, or Newton's first law.

  • Stack of books

#28: Dinosaur Tracks

  • Teaches Kids About: Paleontology

How are some dinosaur tracks still visible millions of years later? By mixing together several ingredients, you'll get a claylike mixture you can press your hands/feet or dinosaur models into to make dinosaur track imprints . The mixture will harden and the imprints will remain, showing kids how dinosaur (and early human) tracks can stay in rock for such a long period of time.

  • Used coffee grounds
  • Wooden spoon
  • Rolling pin

#29: Sidewalk Constellations

  • Teaches Kids About: Astronomy

If you do this sidewalk constellation craft , you'll be able to see the Big Dipper and Orion's Belt in the daylight. On the sidewalk, have kids draw the lines of constellations (using constellation diagrams for guidance) and place stones where the stars are. You can then look at astronomy charts to see where the constellations they drew will be in the sky.

  • Sidewalk chalk
  • Small stones
  • Diagrams of constellations

#30: Lung Model

By building a lung model , you can teach kids about respiration and how their lungs work. After cutting off the bottom of a plastic bottle, you'll stretch a balloon around the opened end and insert another balloon through the mouth of the bottle. You'll then push a straw through the neck of the bottle and secure it with a rubber band and play dough. By blowing into the straw, the balloons will inflate then deflate, similar to how our lungs work.

  • Plastic bottle
  • Rubber band

body_dinosaurbones

#31: Homemade Dinosaur Bones

By mixing just flour, salt, and water, you'll create a basic salt dough that'll harden when baked. You can use this dough to make homemade dinosaur bones and teach kids about paleontology. You can use books or diagrams to learn how different dinosaur bones were shaped, and you can even bury the bones in a sandpit or something similar and then excavate them the way real paleontologists do.

  • Images of dinosaur bones

#32: Clay and Toothpick Molecules

There are many variations on homemade molecule science crafts . This one uses clay and toothpicks, although gumdrops or even small pieces of fruit like grapes can be used in place of clay. Roll the clay into balls and use molecule diagrams to attach the clay to toothpicks in the shape of the molecules. Kids can make numerous types of molecules and learn how atoms bond together to form molecules.

  • Clay or gumdrops (in four colors)
  • Diagrams of molecules

#33: Articulated Hand Model

By creating an articulated hand model , you can teach kids about bones, joints, and how our hands are able to move in many ways and accomplish so many different tasks. After creating a hand out of thin foam, kids will cut straws to represent the different bones in the hand and glue them to the fingers of the hand models. You'll then thread yarn (which represents tendons) through the straws, stabilize the model with a chopstick or other small stick, and end up with a hand model that moves and bends the way actual human hands do.

  • Straws (paper work best)
  • Twine or yarn

#34: Solar Energy Experiment

  • Teaches Kids About: Solar energy, light rays

This solar energy science experiment will teach kids about solar energy and how different colors absorb different amounts of energy. In a sunny spot outside, place six colored pieces of paper next to each other, and place an ice cube in the middle of each paper. Then, observe how quickly each of the ice cubes melt. The ice cube on the black piece of paper will melt fastest since black absorbs the most light (all the light ray colors), while the ice cube on the white paper will melt slowest since white absorbs the least light (it instead reflects light). You can then explain why certain colors look the way they do. (Colors besides black and white absorb all light except for the one ray color they reflect; this is the color they appear to us.)

  • 6 squares of differently colored paper/cardstock (must include black paper and white paper)

#35: How to Make Lightning

  • Teaches Kids About: Electricity, weather

You don't need a storm to see lightning; you can actually create your own lightning at home . For younger kids this experiment requires adult help and supervision. You'll stick a thumbtack through the bottom of an aluminum tray, then stick the pencil eraser to the pushpin. You'll then rub the piece of wool over the aluminum tray, and then set the tray on the Styrofoam, where it'll create a small spark/tiny bolt of lightning!

  • Pencil with eraser
  • Aluminum tray or pie tin
  • Styrofoam tray

#36: Tie-Dyed Milk

  • Teaches Kids About: Surface tension

For this magic milk experiment , partly fill a shallow dish with milk, then add a one drop of each food coloring color to different parts of the milk. The food coloring will mostly stay where you placed it. Next, carefully add one drop of dish soap to the middle of the milk. It'll cause the food coloring to stream through the milk and away from the dish soap. This is because the dish soap breaks up the surface tension of the milk by dissolving the milk's fat molecules.

  • Shallow dish
  • Milk (high-fat works best)

body_stalactite

#37: How Do Stalactites Form?

Have you ever gone into a cave and seen huge stalactites hanging from the top of the cave? Stalactites are formed by dripping water. The water is filled with particles which slowly accumulate and harden over the years, forming stalactites. You can recreate that process with this stalactite experiment . By mixing a baking soda solution, dipping a piece of wool yarn in the jar and running it to another jar, you'll be able to observe baking soda particles forming and hardening along the yarn, similar to how stalactites grow.

  • Safety pins
  • 2 glass jars

Summary: Cool Science Experiments for Kids

Any one of these simple science experiments for kids can get children learning and excited about science. You can choose a science experiment based on your child's specific interest or what they're currently learning about, or you can do an experiment on an entirely new topic to expand their learning and teach them about a new area of science. From easy science experiments for kids to the more challenging ones, these will all help kids have fun and learn more about science.

What's Next?

Are you also interested in pipe cleaner crafts for kids? We have a guide to some of the best pipe cleaner crafts to try!

Looking for multiple different slime recipes? We tell you how to make slimes without borax and without glue as well as how to craft the ultimate super slime .

Want to learn more about clouds? Learn how to identify every cloud in the sky with our guide to the 10 types of clouds .

Want to know the fastest and easiest ways to convert between Fahrenheit and Celsius? We've got you covered! Check out our guide to the best ways to convert Celsius to Fahrenheit (or vice versa) .

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Christine graduated from Michigan State University with degrees in Environmental Biology and Geography and received her Master's from Duke University. In high school she scored in the 99th percentile on the SAT and was named a National Merit Finalist. She has taught English and biology in several countries.

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Science Fun

Science Experiments for Kids:

Science experiments you can do at home!  Explore an ever growing list of hundreds of fun and easy science experiments. Have fun trying these experiments at home or use them for science fair project ideas. Explore experiments by category, newest experiments, most popular experiments, easy at home experiments, or simply scroll down this page for tons of awesome experiment ideas!

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Snow Globe:

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Rainbow in a Glass! - May 2017

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Jello Lenses - August 2018

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Ice Fishing - July 2018

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Super Cool Soda - Sept. 2017

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Fizzy Fruit

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Rotting Pumpkin

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Explode A Bag

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Rotting Pumpkin

Invisible Extinguisher:

Paper Hovercrafts

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Fun Fossil Stamps - April 2017

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Ping Pong - October 2018

Cool Crystals:

Balloon Pop! Not! - January 2017

Balloon Pop! Not!

Solar Eclipse Kit - Aug. 2017

Solar Eclipse Kit:

Moldy Apples - September 2016

Moldy Apples:

Cool Off Volcanoes

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Vinegar Pops - June 2016

Vinegar Pops:

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Make It Rain:

Black Light Blue Beverage - October 2015

Black Light Blue Beverage:

Changing of the Leaves - September 2015

Changing of the Leaves:

Snowflakes - December 2015

Snowflakes:

Egg Drop - November 2015

Water Fireworks:

The Mind of a Student - August 2015

Mind of a Student:

Balloon Speakers - May 2016

Balloon Speakers:

Polar Bear Blubber - January 2016

Polar Bear Blubber:

Gorgeous Gooey Gobstoppers - February 2016

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Olympic Medals - August 2016

Olympic Medals:

Dyed Flowers - May 2015

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Rain, Rain, Don't Go Away Gauge - April 2015

Rain, Rain, Don’t Go Away Gauge:

Blossoming Beans - March 2015

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Sun Dial - January 2015

Butter Fingers:

Polishing Pennies - September 2014

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Dancing Liquid - October 2014

Dancing Liquid:

Floating Egg - April 2014

Floating Egg:

Bendy Bones

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Pot of Gold - March 2016

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Layers of Liquids - May 2014

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Crystal Candy - March 2014

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50 of the Best Science Fair Project Ideas for Kids

  • February 10, 2021

So you have a science fair coming up at school and want to make a project that’s sure to win a prize ribbon? Well, you’ve come to the right place. Choosing the right project requires plenty of research. That’s why we’ve rounded up the best science fair projects ideas to help you along your search.

50 STEM Experiment Ideas for Kids

These 50 science fair project ideas are all great for kids- early and older elementary school students, with a few suitable for middle school students as well. Make a topic that fascinates you, come up with a hypothesis, and see what happens next!

Plus, once you’ve chosen your topic, use this science fair project how-to video from NASA as a helpful guide.

Important note: Some of these science fair projects require the help or supervision of an adult. Always make sure an older family member is nearby and knows what you’re doing as you work on these projects.

1. With this science fair experiment , you can learn what factors affect melting ice.

2. Try this magic milk experiment for an easy science fair project that younger students can accomplish.

3. How much sun does a seed need to sprout? Discover the answer by trying this project you can easily complete from home.

4. Build your own water clock and see how well you can get it to measure time.

5. If you’re interested in a little microbiology, try out this egg cell experiment .

6. What’s the best way to prevent apples from browning? Find out for yourself and make sure to record the results.

7. Do birds eat more food if it is a certain color? Find out with this intriguing experiment .

8. Discover how clouds turn water vapors into rain and diagram a few common types of clouds through this kid-friendly science fair project .

9. Make your own plant cell model using styrofoam and playdough.

10. Learn about aerodynamics by experimenting with paper airplane shapes and seeing which one flies best.

11. Learn how to accelerate the rusting process with this quick and thought-provoking science project .

12. Want to learn about water and density for your project? Perform this floating egg experiment and try out the follow-up questions at the bottom.

13. This project about bending light is perfect for older elementary school students who want to dip their toes into physics.

14. This biology-based science experiment asks, “Will plants grow towards a specific light source?”

15. Learn about greenhouse gases with this science fair idea .

16. Experiment with what makes fruit ripen quickly and write down your results to present at your science fair.

17. Use this hands-on experiment to explore how carbonated drinks affect teeth.

18. Which factors affect evaporation? Find out for yourself with this project that’s perfect for students who can complete it with a little adult supervision.

19. Find out which types of toothpaste work the best and, after measuring your results, try and come up with a conclusion.

20. If the weather is warm out during your science fair, try building a solar oven .

21. For a simple chemistry project , you can make sugar crystals and see what material works best for growing them.

22. Which common material is the best heat conductor? Find out with this science fair project that can be done with adult supervision, as it needs boiling water.

23. Craft your own thermos bottle and test it out for a project all about insulation.

24. Make a DIY thermometer and test it out for a practical and hands-on science project.

25. Try this celery experiment to learn how plant capillaries work.

26. How does the air temperature affect movement? Try one of these fun science fair project ideas as a model for your own experiment.

27. If you’re passionate about the environment, try this recycling experiment for your science fair project

28. How does paint color affect drying time? Make your predictions and test it out for yourself.

29. Learn which soil is best for growing tomatoes if your science fair takes place during warm weather.

30. Build your own lemon battery and see if you can get it to work to learn about electricity.

31. If you want to try the epitome of science fair projects, try making a science fair volcano.

32. How much sugar is in different popular foods? If you’re interested in health science, try this fascinating experiment .

33. If you’d rather look at prompts and create your own project, use these science fair questions for inspiration.

34. Does music affect plant growth? Discover for yourself with this project .

35. Do you need science fair project ideas that will encourage others to recycle? Learn about how to make your own paper .

36. If you have a few furry friends in your neighborhood, consider testing if dogs are colorblind with this project .

37. How does temperature affect air pressure in a ball? Find out the answer with this sporty science project .

38. Build your own pulley and see what kinds of objects you can make it carry.

39. Learn a little about chemistry with this science fair experiment that asks which paper towels are the most absorbent.

40. What is the dirtiest spot in the average home? Find the answer by cultivating bacteria growth in this experiment .

41. Discover how to test thermal energy by observing water temperature.

42. Can you grow seeds with liquids other than water? Find out with this kid-friendly science experiment .

43. This Sun or Shade science fair projec t is perfect for elementary school students.

44. This cool science fair project asks an intriguing question about insect biology: what sweetener do ants prefer?

45. Make a working model of lungs for a science fair project that’s sure to fascinate.

46. Want to try a science fair project that can only end with tasty treats? Bake some cookies and try one of these sweet experiments .

47. Interested in astronomy? Try out this experiment that teaches why the moon’s shape seems to change every day.

48. What are the effects of disinfectant on germs? Use this science fair project as inspiration for your own.

49. Put your math skills to the test with this science fair project centered around the game tic tac toe.

50. What’s stronger: magnetism or gravity? Find out with this science fair experiment that’s perfect for early elementary students.

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40+ Easy Science Experiments For Students: Lots Of Great Ideas

Categories Activities & Ideas

Science is one of the most intriguing subjects to learn in school. It’s so varied and it can be a lot of fun for kids – especially when it comes to conducting science experiments. However, science experiments do not always have to be about beakers and bunsen burners. There are several ways that students can conduct easy science experiments, and it does not require a lot of resources or money to do so.

Easy Science Experiments For Students

But what exactly are the options?

Well, if you are a teacher or a parent looking for easy science experiments for students, then we’ve got you covered. Our comprehensive list below shows you plenty of options that they can take part in.

So, if you’re ready to find out a lot more – then read on for lots of ideas!

Easy Science Experiments For Students! 

Without any further delays, let’s dive right into this list of some easy science experiments for students. We’re sure that your young minds will love some of these!

1. Dancing Pepper

Perhaps one of the most intriguing and fun experiments is the dancing pepper experiment. It shows kids how substances behave differently when placed on water in an effort to show how molecular behavior can differ with surface tension.

This can result in some things appearing to dance, so it’s a pretty fun experiment to observe! 

2. Colored Celery 

This is a pretty basic experiment but it can help to show kids how plants absorb water. You just need either celery or a white flower and some colored water. Once the celery is placed in the colored water, it can help kids to visualize how plants sustain themselves.

3. Dissolve Or Not?

This experiment can help teach kids about different solutions, but it’s more about showing kids the way to create their own hypotheses. For example, having six different substances and six different solutions, questioning whether it will dissolve and why they think so. 

4. Volcano (Baking Soda)

Every kid will have fond memories of this experiment. It’s a super fun and easy science experiment that shows how bases and acids react when they are in contact with one another, and it results in a miniature volcano! 

5. The Skittles Experiment 

This is a cool way to learn about diffusion. You simply need a packet of Skittles and observe what happens when each different color coating is exposed to shallow, cold or hot water. 

6. Burn The Bill 

Don’t panic, you won’t be burning any money with this experiment . It’s an easy way to teach kids about combustion, so you can use any paper item. 

7. Dr. Seuss’ Butter Experiment

Any fans of Dr. Seuss may recognize this experiment. You simply need to put heavy whipping cream into a tight jar and observe how the fat molecules clump together and form a butter product!

8. Liquids And Layers 

Using items that you can find in your pantry, this experiment can help to show kids how liquids have different densities and how they might operate.

9. Egg Crystal Geode 

Merging Springtime and Geology together, this is a fun experiment whereby kids can make their own geodes and learn about super-saturated solutions.

10. Make Rain In A Jar 

This quick and simple experiment can help to show students how rain occurs. As we know, rain is the result of warm, humid air converging with cold air in the upper atmosphere. 

So, using a jar and a plate, you can place ice and water into a jar and show kids how rain works by making your own in a jar! 

11. The Unpoppable Balloon 

Students will be intrigued by how you can put a sharp stick through a balloon and it won’t pop! It’s a quick and simple experiment that demonstrates polymers.

12. Float Or Sink?

This experiment is pretty basic but it’s quite important to learn. It can be conducted anywhere too, but it’s best during hot weather using a lake or river. 

Create a hypothesis with multiple items and question whether or not you believe certain items will sink or float. 

13. Make Your Own Sand 

Any kid will get a kick out of making their own sand ! The experiment doesn’t need too many resources or items, but it’s something you need to ensure before you start.

14. Make Your Own Barometer 

This experiment can help show kids how air pressure has an effect on the weather. The best way to do this is to build your own barometer! 

15. Create A Solar Oven

This is a quick and easy way to show students how radiant heat works. By harnessing its power, there are many things you can do! You just have to be careful.

16. The Sticky Ice Experiment 

It’s really fun to show students how salt has an effect on water and its freezing point. You need water, salt, and some string to carry this one out!

17. An Egg In A Bottle

Using a small bottle, some matches, and an egg, you can show your students how objects may react to adaptations in air pressure.

18. Make A CD Garden 

You’re certain to have some old CD cases around. If so, you can get kids involved in making their own CD case garden and observe the ways that plants grow!

19. The Gummy Worm Dance 

When an acidic liquid is mixed with a neutral solution, it’s possible for some things to react in hilarious ways that kids will love. Place a gummy worm in a jar and mix the solutions to watch your students laugh at the results.

20. Make A Green Penny 

If you have an old penny lying around, then why not test out this experiment , which takes about three days? It’s a cool way to learn about metal and chemical reactions , though! 

21. Soap Popcorn 

This experiment needs supervision from an adult, but it’s awesome to watch. Using Charles’ law, simply place a bar of soap in a microwave and watch how it expands as it heats up. 

22. The Cabbage PH Indicator 

Students can test out the PH levels of different liquids simply by using cabbage. It’s pretty simple to perform and it’s cool to watch.

23. Can Ice Grow?

This experiment needs to be followed step by step, but it’s really interesting to observe. With some basic steps, you can get your students to observe how ice might grow and form towers.

24. Paper Cup – The Strength In Numbers 

Using several paper cups and some cardboard sheets, this is an outdoor experiment that can help to demonstrate weight distribution and how paper cups can hold body weight when in numbers.

25. Separate Pepper And Salt 

Draw from the power of static electricity via a plastic spoon and show students how easy it is for matter to divide and separate – which can be shown with salt and pepper.

26. Fireworks In A Jar

At the right time of year, you can theme this experiment using oil, water, food coloring, and a jar. It’s a super fun project to help kids understand density – and the results are pretty! 

27. Water And Oil Discovery Bottles 

Most of us will be familiar with making water and oil discovery bottles from when we were kids, and it continues to be a super fun experiment for students today. All the bright colors are an awesome sensory experience for kids.

28. Color Mixing With Coffee Filters

This experiment is more for younger students, but it’s simple and effective. Using coffee filters, you can add liquids to watch how the filters absorb them and change colors, making mixes which make new colors.

29. Create Fizzy Lemonade 

A tasty experiment for the summer, this can help teach kids how mixing base liquids with acid creates a chemical reaction – but it results in something that you can enjoy at the end! 

30. Magic Milk 

This simple experiment needs a few items; milk, dish soap, and food coloring. This is a super colorful and fun thing to do and can help show kids how molecular behavior might work, how surface tension works, and a little bit about an object’s density.

31. Walking On Eggs 

Another experiment that can show the power of weight distribution is walking on eggs. Show your students how something so fragile can withstand body weight when in large numbers.

32. Create A Hydraulic Elevator 

This experiment sounds more complex than it actually is. You just need to use some sticks and large medicine droppers. It’s a classic experiment that many STEM teachers have used in the classroom before.

33. Demonstrate Inertia 

Newton’s first law of motion can be demonstrated pretty easily, and it’s never too early or too late to show students how it works! 

34. Grow Your Gummy Bears

When it comes to students and science, what better way to teach them than using candy ? Using all areas of the major sciences, you can turn little gummy bears into big gummy bears! 

35. The Disappearing Egg Shell

Students of all ages enjoy watching this experiment , and it’s helpful to show them the ways that chemical reactions operate.

36. Coca-Cola Tooth Experiment 

This is a classic experiment that can help show students the effects of sugary drinks on their teeth. When your students are young and losing their baby teeth, ask them to bring in a tooth and show them the horrible effects in a jar! 

37. Small Tornado In A Bottle

Most of us performed this experiment when we were students, and it’s super fun to keep it going with your own students. Demonstrating centripetal force by creating a water vortex in a bottle is awesome! 

38. Make A Bag Leak-Proof

Another experiment that demonstrates polymers, you need a plastic bag, some water, a sharp pencil, and some patience – and you can show kids the seemingly impossible!

39. Make A Non-Newtonian Fluid 

There are substances out there that get firmer when pressure is applied to them, and these are known as non-Newtonian fluids. It’s really intriguing to see how fluids can behave in such ways, so your students are bound to get a kick out of this.

40. Demonstrate Capillaries

You can show kids how our capillaries function using items you can find pretty much everywhere. It’s super cool and colorful and you’re bound to excite everyone with this in the classroom.

41. Make Candy Rock 

Students, candy, and rocks – they go hand in hand! Your students will love to create their own candy rock and watch as the rock crystals grow.

42. Make The Super Bubble

You can show students how to make a better version of bubble mixture to create much larger bubbles, called superbubbles! 

43. Frozen Vegetable Oil Paintings

Here’s another classic experiment that most kids have conducted when they were in the classroom. It’s a fun way to show kids how some liquids behave when they are frozen, and as vegetable oil behaves differently – you can make awesome paintings! 

44. Make An Ice Magnifying Glass 

This experiment is pretty simple, but we like to add something more fun to it. Once you have made your ice magnifying glass, show your students how glass behaves underwater by designing a real magnifying glass (do not allow them to do this though).

Glass under water can be cut and sliced in much different ways than above the surface, so you can easily create your own glass designs to show your students in a safe way.

45. Can Eggs Float?

Finally, on our list, we have the experiment that has shown students for years how eggs can float on water if salt is added to the liquid. It’s a simple way to explain density, and it’s always a good idea to bring in the Dead Sea example.

The Dead Sea is so salty that people can simply float on its surface, but it’s also deadly because if you turn around – it’s difficult to get your head out of the salty water! 

Things To Remember

There are always things you should remember when it comes to these sorts of experiments. Some are much more obvious than others, but it’s always important to ensure we’re on the same wavelength. These include the following.

Safety 

Conduct a health and safety risk assessment before you carry out any experiment, and always be aware of any safety equipment you and your students may need to wear. Be sure to take reasonable care with all of your experiments (and best to do a trial run first!).

Reinforce Learning 

It’s all fine and good demonstrating the experiments, but you must ensure that you reinforce the student’s learning by asking questions at the end of the lesson. It’s also wise to set some theoretical homework based on their practical experiment. 

Do Your Research 

It’s of course critical that you know exactly what you are doing before you show your students, but it’s also as important to know your students. For example, if an experiment is more tailored for younger students, do not try it for older kids.  You may also like: 1st grade science project ideas .

The Bottom Line 

And that’s our comprehensive list of the easiest science experiments that you can show students in the classroom, at home, or out in the field! We hope you have enjoyed our guide and you’ve found some amazing new experiments for your students! Good luck.

Top tip: Teach your students about the most famous inventors while they work on their own science experiments.

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20 Awesome Science Experiments You Can Do Right Now At Home

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305 20 Awesome Science Experiments You Can Do Right Now At Home

We can all agree that science is awesome. And you can bring that awesomeness into your very own home with these 20 safe DIY experiments you can do right now with ordinary household items.

1. Make Objects Seemingly Disappear Refraction is when light changes direction and speed as it passes from one object to another. Only visible objects reflect light. When two materials with similar reflective properties come into contact, light will pass through both materials at the same speed, rendering the other material invisible. Check out this video from BritLab  on how to turn glass invisible using vegetable oil and pyrex glass.

2. Freeze Water Instantly When purified water is cooled to just below freezing point, a quick nudge or an icecube placed in it is all it takes for the water to instantly freeze. You can finally have the power of Frozone from The Incredibles on a very small scale! Check out the video on this "cool" experiment. 

3. Create Oobleck And Make It Dance To The Music Named after a sticky substance in a children’s book by Dr Seuss , Oobleck is a non-Newtonian fluid, which means it can behave as both a solid and a liquid. And when placed on a sound source, the vibrations causes the mixture to gloopily dance. Check out these instructions from Housing A Forest  on how to make this groovy fluid funk out in every way.

4. Create Your Own Hybrid Rocket Engine With a combination of a solid fuel source and a liquid oxidizer, hybrid rocket engines can propel themselves. And on a small scale, you can create your own hybrid rocket engine, using pasta, mouthwash and yeast. Sadly, it won’t propel much, but who said rocket science ain’t easy? Check out this video from NightHawkInLight on how to make this mini engine.

5. Create "Magic Mud" Another non-Newtonian fluid here, this time from the humble potato. "Magic Mud" is actually starch found in potatoes. It’ll remain hard when handled but leave it alone and it turns into a liquid. Make your own “Magic Mud” with this video.

6. Command The Skies And Create A Cloud In A Bottle Not quite a storm in a teacup, but it is a cloud in a bottle. Clouds up in the sky are formed when water vapor cools and condenses into visible water droplets. Create your own cloud in a bottle using a few household items with these wikiHow instructions .

7. Create An Underwater Magical World First synthesized by Adolf van Baeyer in 1871, fluorescein is a non-toxic powder found in highlighter pens, and used by NASA to find shuttles that land in the sea. Create an underwater magical world with this video from NightHawkInLight .

9. Make Your Own Lava Lamp Inside a lava lamp are colored bubbles of wax suspended in a clear or colorless liquid, which changes density when warmed by a heating element at the base, allowing them to rise and fall hypnotically. Create your own lava lamp with these video instructions.

10. Create Magnetic Fluid A ferrofluid is a liquid that contains nanoscale particles of metal, which can become magnetized. And with oil, toner and a magnet , you can create your own ferrofluid and harness the power of magnetism! 

12. Make Waterproof Sand A hydrophobic substance is one that repels water. When sand is combined with a water-resistant chemical, it becomes hydrophobic. So when it comes into contact with water, the sand will remain dry and reusable. Make your own waterproof sand with this video .

13. Make Elephant's Toothpaste Elephant’s toothpaste is a steaming foamy substance created by the rapid decomposition of hydrogen peroxide, which sort of resembles giant-sized toothpaste. Make your own elephant’s toothpaste with these instructions.

14. Make Crystal Bubbles When the temperature falls below 0 o C (32 o F), it’s possible to freeze bubbles into crystals. No instructions needed here, just some bubble mix and chilly weather.

15. Make Moving Liquid Art Mixing dish soap and milk together causes the surface tension of the milk to break down. Throw in different food colorings and create this trippy chemical reaction.

16. Create Colourful Carnations Flowers absorb water through their stems, and if that water has food coloring in it, the flowers will also absorb that color. Create some wonderfully colored flowers with these wikiHow instructions .

17. "Magically" Turn Water Into Wine Turn water into wine with this  video  by experimenter Dave Hax . Because water has a higher density than wine, they can switch places. Amaze your friends with this fun science trick.

18. Release The Energy In Candy (Without Eating It) Dropping a gummy bear into a test tube with potassium chlorate releases the chemical energy inside in an intense chemical reaction. That’s exactly what's happening when you eat candy, kids.

19. Make Water "Mysteriously" Disappear Sodium polyacrylate is a super-absorbent polymer, capable of absorbing up to 300 times its own weight in water. Found in disposable diapers, you can make water disappear in seconds with this video .

20. Create A Rainbow In A Jar Different liquids have different masses and different densities. For example, oil is less dense than water and will float on top of its surface. By combining liquids of different densities and adding food coloring, you can make an entire rainbow in a jar with this video .

There you have it – 20 experiments for you to explore the incredible world of science!

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45 Fabulous 1st Grade Science Projects That Little Learners Will Love

Hands-on science is a surefire way to connect with every kid.

Collage of 1st grade science projects, including pencil refraction and a window greenhouse

First graders will cheer when you announce that they’ll get to do a real, hands-on science experiment! These 1st grade science projects are easy for kids to do, with concepts that will help build their science knowledge for the future.

To make it even easier to find the best science projects for 1st graders, we’ve given each a rating based on difficulty and the materials you’ll need:

Difficulty:

  • Easy: Low or no-prep experiments you can do pretty much anytime
  • Medium: These take a little more setup or a longer time to complete
  • Advanced: Experiments like these take a fairly big commitment of time and/or effort
  • Basic: Simple items you probably already have around the house
  • Medium: Items that you might not already have but are easy to get your hands on
  • Advanced: These require specialized or more expensive supplies to complete

Animal and Nature Science Projects for 1st Grade

Weather science experiments for 1st grade.

  • More 1st Grade Science Experiments and Projects

Learn about animals, plants, and the Earth in general with these fun science activities for first graders.

Sort animals by features

Charts showing zoo animals sorted by category.

Difficulty: Easy / Materials: Basic

Use a printable or pull out the toy animals and have kids sort them into categories. It’s an early introduction to classification systems.

Learn more: Animal Sort at Fairy Poppins

Build the layers of Earth with Play-Doh

A ball of play doh has a slice taken out of it. It has a yellow center, a brown layer, a red layer, and a blue and green outer shell (first grade science experiments)

Another creative use for Play-Doh! Teach your students about the different layers of Earth and then have them create the layers using different colors of Play-Doh.

Learn more: Layers of the Earth at Evans Elementary School

Turn a plastic bag into a greenhouse

House made of green paper, with zip top plastic bag containing paper towel and sprouting seeds (First Grade Science Experiments)

Difficulty: Easy / Materials: Medium

Turn your 1st grade science class into gardeners! Use a damp paper towel in a plastic bag to allow them to see a seed sprouting and growing roots.

Learn more: Greenhouse Bag at Lessons for Little Ones

See how shadows change throughout the day

First grade science students measuring the shadows on a sunny day on the playground

Start in the morning: Have kids stand in one spot on the playground while a partner traces their shadow with sidewalk chalk . Ask them what they think will happen when they stand in the same spot during the afternoon, then head back outside after lunch to find out.

Learn more: Shadow Experiment at The First Grade Roundup

Discover how plants drink water

Three glasses of water dyed different colors with a celery stalk in each

Capillary action is the name of the game, and your 1st grade science kiddos will be amazed at the results. Place celery stalks in cups of colored water, and watch as the leaves change color!

Learn more: Capillary Action at Lessons for Little Ones

Build a bird feeder

Platform-style bird feeder built from colorful wood craft sticks and filled with mixed seed (First Grade Science Experiments)

Set young engineers loose with wood craft sticks , glue, and string to create a bird feeder. Then research the best seeds to fill them with, and hang them outside your classroom window to draw in some feathered friends.

Learn more: DIY Bird Feeder at Mombrite

Observe the birds at your feeder

Once your feeder is in place, teach kids to identify common birds and keep track of their visits. Report their findings to one of Cornell Lab of Ornithology’s Citizen Science projects to let kids be part of real-life research. ( Find more bird-watching activities for kids here. )

Experiment with apples and oxidation

Four jars with apple slice in each, filled with air, water, vinegar, and oil, with two magnifying glasses

Apples turn brown when they’re cut open due to oxidation. Is there any way to prevent that from happening? This experiment aims to find out. ( Explore more apple activities here. )

Learn more: Apples Experiment at Camping Teacher

Use colorful beads to learn about camouflage

Printed picture of a wildflower meadow with colored beads laid on top

Animal camouflage is an important way for prey to protect itself from predators. To learn how effective it can be, place matching colored beads on top of a photo of wildflowers and see how long it takes students to find them all.

Learn more: Camouflage Activity at The First Grader Roundup

Expose a sponge fish to pollution

A series of images showing fish-shaped sponges in containers filled with oil, dirt, etc.

It’s never too early to start learning about how important it is to protect the Earth. Use sponge “fish” to see how polluted water affects the wildlife living in it.

Learn more: Pollution Experiment at The Owl Teacher

Dig in the dirt with claws

Student's hand wearing pink glove with plastic spoons attached to fingers, digging in dirt

Animal adaptations allow creatures to live in just about every environment on Earth. Learn how claws help some animals survive and thrive by gluing plastic spoons to a glove.

Learn more: Claw Glove at The First Grade Roundup

Observe plant transpiration

Tree branch with leaves covered with an air-tight plastic bag (First Grade Science Experiments)

Many plants take in more water than they need. What happens to the rest? Wrap a plastic bag around a living tree branch to see transpiration in action.

Learn more:  Leaf Transpiration at Teach Beside Me

Try these science activities to explore wind, rain, and more with your firsties.

Create a weather vane

A weathervane is made from a pink container with a pencil with a sewing needle in the eraser coming out of it. A straw with a piece of paper are attached to the top horizontally (first grade science experiments)

A weather vane is one of the oldest scientific tools—they help people know which way the wind is blowing. Learn how to make your own with this cool weather experiment.

Learn more: Weathervane Experiment at Rookie Parenting

Grow a rainbow

Paper towel stretched between two glasses of water, with rainbow colors stretching across it (First Grade Science Experiments)

Kids learn the colors of the rainbow along with chromatography as they watch marker streaks climb up and meet across a wet paper towel. The word might be a big one for little kids to learn, but they’ll love to see it in action!

Learn more: Grow a Rainbow at The Best Ideas for Kids

Make it rain

Glass of water with shaving cream on top and blue food coloring dropping down

You need rain to make a rainbow. Simulate a rain cloud in a jar with shaving cream and food coloring, and see how the coloring saturates the “cloud” until it simply must fall.

Learn more: Shaving Cream Clouds at Fun Learning for Kids

Create frost in a can

A tin can has frost developing in it (first grade science experiments)

This is an especially fun experiment during those chilly winter months. First, fill the can with ice and halfway with water. Then have the kids sprinkle salt in the can and cover the top. Finally, shake it and wait about three minutes for the frost to begin to appear.

Learn more: Frost in a Can at Kindergarten Worksheets and Games

Create an avalanche

Blue tray covered in flour and small pebbles (First Grade Science Experiments)

Learn about the destructive power of an avalanche in a safe way with this experiment. All you need is flour, cornmeal, pebbles, and a plastic tray.

Learn more: Avalanche Experiment at A Dab of Glue Will Do

More 1st Grade Science Projects and Experiments

Looking for more? Try these experiments on a range of subjects to teach first graders all about science.

Give gummy bears a bath

Four plastic cups with liquid and gummi bears, sitting on a printable worksheet (First Grade Science)

Drop gummy bears into different liquid solutions to see how they change (or don’t) over time. Kids will learn about osmosis, as well as how scientists must be good observers.

Learn more: Gummy Bear Experiment at First Grade Buddies + Co

Play a DIY flute

First grade science student playing a homemade pan flute

These homemade flutes are fun to play, but they also help young kids learn about sound. Let them experiment with straw lengths to see what tones they can make.

Learn more: DIY Pan Flute at Buggy and Buddy

Play with Play-Doh to learn why we have bones

Worksheet entitled Why Do I Have Bones with Play-Doh, drinking straws, and simple model of human figure

Ask kids to build a person from Play-Doh and see if it will stand on its own. Then show them how adding drinking straws gives it structure and strength, and explain that bones do the same for us! ( Get more clever ways to use Play-Doh in the classroom here. )

Learn more: Play-Doh Bones at Keeping My Kiddo Busy

Find out which objects magnets attract

Two sheets labeled Magnetic and Not Magnetic with small u-shaped magnet and a basket of small objects

Equip students with magnets and send them out to explore and discover which objects the magnet will stick to and which won’t. Record their findings on the free printable worksheet at the link.

Learn more: Magnet Science Experiments at Fairy Poppins

Grow a crystal garden

Glass bowl holding blue water solution covered in crystals

First grade science students might not grasp the concept of supersaturated solutions, but they’ll still love a good crystal project! Grab some magnifying glasses and let them examine the crystals up close (try not to touch, as they’re very fragile) to see the cool geometric structures.

Learn more: Crystal Garden at Babble Dabble Do

Build a jelly bean structure

First grade science student building a structure from jellybeans and toothpicks

If you’re doing this STEM project in the spring, jelly beans make the perfect base. If you can’t get a hold of jelly beans, try substituting tiny marshmallows in their place. Make sure to have some extras on hand since little hands are likely to snack as they build.

Learn more: Jellybean STEM Challenge at The STEM Laboratory

Experiment with marshmallow Peeps

Three cups labeled water, vinegar, and soda, each with a pink marshmallow bunny floating in it

Peeps used to just be an Easter treat, but these days you can find them in different shapes throughout much of the year. Use them to practice making predictions and recording observations with this sweet experiment.

Learn more: Easter Peeps Science Experiment at Gift of Curiosity

Spark excitement with static electricity

Pink balloon with scrap of yellow tissue paper stuck to it, labeled Static Electricity Experiment for Kids (First Grade Science)

No doubt your 1st grade science students have already encountered static electricity by rubbing a balloon on their hair. This experiment takes things a step further, letting kids explore which objects an electrically charged balloon can pick up and which it can’t.

Learn more: Static Electricity Balloons at Kids Activities Blog

Melt crayons to explore solids and liquids

A rainbow of crayons laid on white paper, melting and running down. Text reads Melting: Solid to Liquid, Solid plus Heat equals Liquid

Dig out some old crayons and use them for this easy experiment that demonstrates the difference between liquids and solids. When you’re done, you’ll have a cool piece of art to display. ( Discover more uses for broken crayons here. )

Learn more: Melting Crayons at First Grade Circle

Talk through a paper cup phone

Two green paper cups connected at the bottoms by long pink string (First Grade Science Experiments)

This classic experiment will help your 1st grade science class understand that sound travels in waves, through the air, and across other objects. Watching their faces light up when they hear whispers in their cups will make your day!

Learn more: Paper Cup Phone at There’s Just One Mommy

Blow a bubble snake

A little boy is seen blowing out a long stream of bubbles that are all attached (first grade science experiments)

Difficulty: Medium / Materials: Basic

You’ll need to plan this experiment for a day with nice weather since it is best suited to outdoors. You will need an empty water bottle, a washcloth, a rubber band, a small bowl or plate, food coloring, scissors or box cutters, distilled water, dish soap, and Karo syrup or glycerin. There’s a lot of prep, but the end result is definitely worth it!

Learn more: Bubble Snakes at Hand 2 Mind

Learn why we have night and day

Paper plate divided in half, with night illustrated on one half and day on the other

The Earth’s daily rotation gives us days and nights. This simple demo helps kids understand that. They draw a day scene and a night scene on a paper plate, then cover it with half of another plate that can be moved. This is an art project and 1st grade science experiment all rolled into one.

Learn more: Night and Day Play at Universe Awareness

Float food coloring on milk

Glass of milk with blue, red, and orange food coloring floating on the surface (First Grade Science Experiments)

Learn about surface tension by dropping food coloring onto different types of milk (whole, skim, cream, etc.). Then use dish soap to break down the fats and surface tension, and watch the colors dance!

Learn more: Surface Tension Milk at STEAMsational

Drop water onto a penny

Continue your exploration of surface tension by adding water drop-by-drop to a penny. The surface tension will allow you to add far more water than you might think.

Will it sink or swim?

Ask students to predict whether a variety of items will sink or float in water. Then test each object to check their hypotheses.

Blow up a balloon using yeast

Young student pouring yeast through a funnel into a plastic bottle

This is similar to the classic lemon juice and baking soda experiment many kids do at some point. But this one is better for younger kids since you don’t have to worry about them splashing the juice in their eyes. Kids will be just as astonished at the results as the yeast eats the sugar and produces carbon dioxide gas!

Learn more: Yeast Balloon Experiment at The STEM Laboratory

Push on air

A piece of paper says Pushing On Air. It has a barrell, plunger, syringe, etc. on it

Teach your students about air compression and air pressure using a barrel, plunger, syringe, and flexible tube. Kids will definitely get a kick out of air wrestling and popping off their plungers using air pressure.

Learn more: Air Pressure Experiment at First Grade Adventurers

Test your reaction time

Blue ruler dropping into student's hand

Do your students have lightning-quick reflexes? Find out with this easy experiment. One student holds a ruler vertically, while another places their hand just beneath and waits. When the first student drops the ruler, the second catches it as quickly as possible, seeing how many inches passed through their fingers first.

Learn more: Reaction Time Experiment at Science Sparks

Assemble a DIY lava lamp

Glass jar filled with water and floating yellow oil

Your firsties are too young to remember the lava lamp craze, but this science project will give them a taste of it as they learn about liquid density.

Learn more: Salt Volcano Lava Lamp at What Do We Do All Day?

Learn the scientific method with candy

Worksheet labeled Will It Melt? with dish of various candies and a red crayon (First Grade Science Experiments)

See the scientific method in action as kids hypothesize what will happen to various types of candy in the hot sun. Observe, record, and analyze your results to see if their predictions were correct.

Learn more: Candy Scientific Method Activity at Playdough to Plato

Look into mirrors to discover symmetry

Young student's hand holding a mirror on a piece of paper with the letters A I U, showing symmetry (First Grade Science Experiments)

By now, 1st grade science students may have noticed that mirrors reflect objects backward. Ask them to write the alphabet in capital letters, then hold it up to the mirror. Which letters are the same when they’re reflected? Use those findings to talk about symmetry.

Learn more: Mirror Symmetry at Buggy and Buddy

Create a super-simple circuit

A child's hands are shown holding large batteries, tin foil, and a small light.

This is the perfect way to introduce the concept of electricity to young students since the materials and steps are minimal. You will need a D battery, tinfoil, electrical tape, and a light bulb from a flashlight.

Learn more: Super-Simple Circuit at What Do We Do All Day?

“Bend” a pencil using light refraction

Mason jar of water with a pencil in it, viewed from the side

Tell your students you’re going to bend a pencil without touching it. Drop it into a glass of water and have them look at it from the side. Light refraction makes it appear to be in two pieces!

Learn more: Bending Pencil Experiment at STEAMsational

Roll marbles to explore momentum

A ruler propped on one side on a flat book, with a marble rolling down it toward a folded index card (First Grade Science Experiments)

Momentum is “mass in motion,” but what does that really mean? Find out by rolling marbles of different sizes down rulers placed at various slopes.

Learn more: Momentum Experiments at Frugal Fun for Boys and Girls

Dunk eggs to understand dental health

A series of plastic cups filled with varieties of soda, juice, and other liquids, with an egg in each

Grown-ups are always telling kids sugary drinks are bad for their teeth, so try this experiment to put your money where your mouth is! Eggshells are a good substitute for teeth since they’re both made of calcium. Leave eggs in different kinds of beverages to see which ones do the most damage to the shells.

Learn more: Dental Health Eggs at First Grade Funtastic

Melt ice cubes to make new colors

Plastic containers holding colored ice cubes floating in water of different colors

Color mixing is one of those incredibly cool activities that kids will want to try again and again. Make ice cubes using primary colors, then let them melt together to see what new colors you can create.

Learn more: Color Mixing at Gift of Curiosity

Fly a paper airplane

Kid absolutely love creating and flying paper airplanes, so this experiment is sure to be a hit. Have your students create different-style planes and then experiment with thrust and lift to see which fly the farthest, highest, etc.

Weigh items with a homemade balance scale

Hands are shown punching holes into small plastic cups (first grade science experiments)

Make a simple balance scale with a coat hanger, yarn, and some plastic cups. Have students gather items from around the classroom, make predictions about which will be heavier, then test their hypothesis.

Learn more: DIY Balance Scale at WikiHow

If you love 1st grade science, be sure to check out these 25 First Grade STEM Challenges .

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First grade science students will love these hands-on activities! Grow a rainbow, learn about camouflage, build a bird feeder, and more!

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  • Academic writing
  • How to write a lab report

How To Write A Lab Report | Step-by-Step Guide & Examples

Published on May 20, 2021 by Pritha Bhandari . Revised on July 23, 2023.

A lab report conveys the aim, methods, results, and conclusions of a scientific experiment. The main purpose of a lab report is to demonstrate your understanding of the scientific method by performing and evaluating a hands-on lab experiment. This type of assignment is usually shorter than a research paper .

Lab reports are commonly used in science, technology, engineering, and mathematics (STEM) fields. This article focuses on how to structure and write a lab report.

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Table of contents

Structuring a lab report, introduction, other interesting articles, frequently asked questions about lab reports.

The sections of a lab report can vary between scientific fields and course requirements, but they usually contain the purpose, methods, and findings of a lab experiment .

Each section of a lab report has its own purpose.

  • Title: expresses the topic of your study
  • Abstract : summarizes your research aims, methods, results, and conclusions
  • Introduction: establishes the context needed to understand the topic
  • Method: describes the materials and procedures used in the experiment
  • Results: reports all descriptive and inferential statistical analyses
  • Discussion: interprets and evaluates results and identifies limitations
  • Conclusion: sums up the main findings of your experiment
  • References: list of all sources cited using a specific style (e.g. APA )
  • Appendices : contains lengthy materials, procedures, tables or figures

Although most lab reports contain these sections, some sections can be omitted or combined with others. For example, some lab reports contain a brief section on research aims instead of an introduction, and a separate conclusion is not always required.

If you’re not sure, it’s best to check your lab report requirements with your instructor.

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Your title provides the first impression of your lab report – effective titles communicate the topic and/or the findings of your study in specific terms.

Create a title that directly conveys the main focus or purpose of your study. It doesn’t need to be creative or thought-provoking, but it should be informative.

  • The effects of varying nitrogen levels on tomato plant height.
  • Testing the universality of the McGurk effect.
  • Comparing the viscosity of common liquids found in kitchens.

An abstract condenses a lab report into a brief overview of about 150–300 words. It should provide readers with a compact version of the research aims, the methods and materials used, the main results, and the final conclusion.

Think of it as a way of giving readers a preview of your full lab report. Write the abstract last, in the past tense, after you’ve drafted all the other sections of your report, so you’ll be able to succinctly summarize each section.

To write a lab report abstract, use these guiding questions:

  • What is the wider context of your study?
  • What research question were you trying to answer?
  • How did you perform the experiment?
  • What did your results show?
  • How did you interpret your results?
  • What is the importance of your findings?

Nitrogen is a necessary nutrient for high quality plants. Tomatoes, one of the most consumed fruits worldwide, rely on nitrogen for healthy leaves and stems to grow fruit. This experiment tested whether nitrogen levels affected tomato plant height in a controlled setting. It was expected that higher levels of nitrogen fertilizer would yield taller tomato plants.

Levels of nitrogen fertilizer were varied between three groups of tomato plants. The control group did not receive any nitrogen fertilizer, while one experimental group received low levels of nitrogen fertilizer, and a second experimental group received high levels of nitrogen fertilizer. All plants were grown from seeds, and heights were measured 50 days into the experiment.

The effects of nitrogen levels on plant height were tested between groups using an ANOVA. The plants with the highest level of nitrogen fertilizer were the tallest, while the plants with low levels of nitrogen exceeded the control group plants in height. In line with expectations and previous findings, the effects of nitrogen levels on plant height were statistically significant. This study strengthens the importance of nitrogen for tomato plants.

Your lab report introduction should set the scene for your experiment. One way to write your introduction is with a funnel (an inverted triangle) structure:

  • Start with the broad, general research topic
  • Narrow your topic down your specific study focus
  • End with a clear research question

Begin by providing background information on your research topic and explaining why it’s important in a broad real-world or theoretical context. Describe relevant previous research on your topic and note how your study may confirm it or expand it, or fill a gap in the research field.

This lab experiment builds on previous research from Haque, Paul, and Sarker (2011), who demonstrated that tomato plant yield increased at higher levels of nitrogen. However, the present research focuses on plant height as a growth indicator and uses a lab-controlled setting instead.

Next, go into detail on the theoretical basis for your study and describe any directly relevant laws or equations that you’ll be using. State your main research aims and expectations by outlining your hypotheses .

Based on the importance of nitrogen for tomato plants, the primary hypothesis was that the plants with the high levels of nitrogen would grow the tallest. The secondary hypothesis was that plants with low levels of nitrogen would grow taller than plants with no nitrogen.

Your introduction doesn’t need to be long, but you may need to organize it into a few paragraphs or with subheadings such as “Research Context” or “Research Aims.”

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A lab report Method section details the steps you took to gather and analyze data. Give enough detail so that others can follow or evaluate your procedures. Write this section in the past tense. If you need to include any long lists of procedural steps or materials, place them in the Appendices section but refer to them in the text here.

You should describe your experimental design, your subjects, materials, and specific procedures used for data collection and analysis.

Experimental design

Briefly note whether your experiment is a within-subjects  or between-subjects design, and describe how your sample units were assigned to conditions if relevant.

A between-subjects design with three groups of tomato plants was used. The control group did not receive any nitrogen fertilizer. The first experimental group received a low level of nitrogen fertilizer, while the second experimental group received a high level of nitrogen fertilizer.

Describe human subjects in terms of demographic characteristics, and animal or plant subjects in terms of genetic background. Note the total number of subjects as well as the number of subjects per condition or per group. You should also state how you recruited subjects for your study.

List the equipment or materials you used to gather data and state the model names for any specialized equipment.

List of materials

35 Tomato seeds

15 plant pots (15 cm tall)

Light lamps (50,000 lux)

Nitrogen fertilizer

Measuring tape

Describe your experimental settings and conditions in detail. You can provide labelled diagrams or images of the exact set-up necessary for experimental equipment. State how extraneous variables were controlled through restriction or by fixing them at a certain level (e.g., keeping the lab at room temperature).

Light levels were fixed throughout the experiment, and the plants were exposed to 12 hours of light a day. Temperature was restricted to between 23 and 25℃. The pH and carbon levels of the soil were also held constant throughout the experiment as these variables could influence plant height. The plants were grown in rooms free of insects or other pests, and they were spaced out adequately.

Your experimental procedure should describe the exact steps you took to gather data in chronological order. You’ll need to provide enough information so that someone else can replicate your procedure, but you should also be concise. Place detailed information in the appendices where appropriate.

In a lab experiment, you’ll often closely follow a lab manual to gather data. Some instructors will allow you to simply reference the manual and state whether you changed any steps based on practical considerations. Other instructors may want you to rewrite the lab manual procedures as complete sentences in coherent paragraphs, while noting any changes to the steps that you applied in practice.

If you’re performing extensive data analysis, be sure to state your planned analysis methods as well. This includes the types of tests you’ll perform and any programs or software you’ll use for calculations (if relevant).

First, tomato seeds were sown in wooden flats containing soil about 2 cm below the surface. Each seed was kept 3-5 cm apart. The flats were covered to keep the soil moist until germination. The seedlings were removed and transplanted to pots 8 days later, with a maximum of 2 plants to a pot. Each pot was watered once a day to keep the soil moist.

The nitrogen fertilizer treatment was applied to the plant pots 12 days after transplantation. The control group received no treatment, while the first experimental group received a low concentration, and the second experimental group received a high concentration. There were 5 pots in each group, and each plant pot was labelled to indicate the group the plants belonged to.

50 days after the start of the experiment, plant height was measured for all plants. A measuring tape was used to record the length of the plant from ground level to the top of the tallest leaf.

In your results section, you should report the results of any statistical analysis procedures that you undertook. You should clearly state how the results of statistical tests support or refute your initial hypotheses.

The main results to report include:

  • any descriptive statistics
  • statistical test results
  • the significance of the test results
  • estimates of standard error or confidence intervals

The mean heights of the plants in the control group, low nitrogen group, and high nitrogen groups were 20.3, 25.1, and 29.6 cm respectively. A one-way ANOVA was applied to calculate the effect of nitrogen fertilizer level on plant height. The results demonstrated statistically significant ( p = .03) height differences between groups.

Next, post-hoc tests were performed to assess the primary and secondary hypotheses. In support of the primary hypothesis, the high nitrogen group plants were significantly taller than the low nitrogen group and the control group plants. Similarly, the results supported the secondary hypothesis: the low nitrogen plants were taller than the control group plants.

These results can be reported in the text or in tables and figures. Use text for highlighting a few key results, but present large sets of numbers in tables, or show relationships between variables with graphs.

You should also include sample calculations in the Results section for complex experiments. For each sample calculation, provide a brief description of what it does and use clear symbols. Present your raw data in the Appendices section and refer to it to highlight any outliers or trends.

The Discussion section will help demonstrate your understanding of the experimental process and your critical thinking skills.

In this section, you can:

  • Interpret your results
  • Compare your findings with your expectations
  • Identify any sources of experimental error
  • Explain any unexpected results
  • Suggest possible improvements for further studies

Interpreting your results involves clarifying how your results help you answer your main research question. Report whether your results support your hypotheses.

  • Did you measure what you sought out to measure?
  • Were your analysis procedures appropriate for this type of data?

Compare your findings with other research and explain any key differences in findings.

  • Are your results in line with those from previous studies or your classmates’ results? Why or why not?

An effective Discussion section will also highlight the strengths and limitations of a study.

  • Did you have high internal validity or reliability?
  • How did you establish these aspects of your study?

When describing limitations, use specific examples. For example, if random error contributed substantially to the measurements in your study, state the particular sources of error (e.g., imprecise apparatus) and explain ways to improve them.

The results support the hypothesis that nitrogen levels affect plant height, with increasing levels producing taller plants. These statistically significant results are taken together with previous research to support the importance of nitrogen as a nutrient for tomato plant growth.

However, unlike previous studies, this study focused on plant height as an indicator of plant growth in the present experiment. Importantly, plant height may not always reflect plant health or fruit yield, so measuring other indicators would have strengthened the study findings.

Another limitation of the study is the plant height measurement technique, as the measuring tape was not suitable for plants with extreme curvature. Future studies may focus on measuring plant height in different ways.

The main strengths of this study were the controls for extraneous variables, such as pH and carbon levels of the soil. All other factors that could affect plant height were tightly controlled to isolate the effects of nitrogen levels, resulting in high internal validity for this study.

Your conclusion should be the final section of your lab report. Here, you’ll summarize the findings of your experiment, with a brief overview of the strengths and limitations, and implications of your study for further research.

Some lab reports may omit a Conclusion section because it overlaps with the Discussion section, but you should check with your instructor before doing so.

If you want to know more about AI for academic writing, AI tools, or fallacies make sure to check out some of our other articles with explanations and examples or go directly to our tools!

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A lab report conveys the aim, methods, results, and conclusions of a scientific experiment . Lab reports are commonly assigned in science, technology, engineering, and mathematics (STEM) fields.

The purpose of a lab report is to demonstrate your understanding of the scientific method with a hands-on lab experiment. Course instructors will often provide you with an experimental design and procedure. Your task is to write up how you actually performed the experiment and evaluate the outcome.

In contrast, a research paper requires you to independently develop an original argument. It involves more in-depth research and interpretation of sources and data.

A lab report is usually shorter than a research paper.

The sections of a lab report can vary between scientific fields and course requirements, but it usually contains the following:

  • Abstract: summarizes your research aims, methods, results, and conclusions
  • References: list of all sources cited using a specific style (e.g. APA)
  • Appendices: contains lengthy materials, procedures, tables or figures

The results chapter or section simply and objectively reports what you found, without speculating on why you found these results. The discussion interprets the meaning of the results, puts them in context, and explains why they matter.

In qualitative research , results and discussion are sometimes combined. But in quantitative research , it’s considered important to separate the objective results from your interpretation of them.

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Bhandari, P. (2023, July 23). How To Write A Lab Report | Step-by-Step Guide & Examples. Scribbr. Retrieved February 25, 2024, from https://www.scribbr.com/academic-writing/lab-report/

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