fun experiments for 6th graders

• Grades 6-12
• School Leaders

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50 Interesting 6th Grade Science Fair Projects and Classroom Activities

Award-winning ideas and science demos on every topic.

Sixth grade science covers a wide variety of topics and varies depending on the curriculum. We’ve rounded up the best 6th grade science fair projects to inspire kids, as well as classroom science demos and activities that will grab their attention.

To make it easier to find what you’re looking for, we’ve rated all the projects and activities by difficulty and the materials needed:

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 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

Biology and Earth Science 6th Grade Science Fair Projects

Chemistry 6th grade science fair projects, physics and engineering 6th grade science fair projects, 6th grade science classroom demos and hands-on activities.

For students interested in anatomy, animals, geology, ecology, and more, these are the science fair projects they need!

Find the fastest way to ripen fruit

Difficulty: Medium / Materials: Medium

Need to ripen those bananas or peaches in a hurry? Do some research and then experiment to find the fastest way to safely ripen fruit without sacrificing flavor.

Clean up an oil spill

Learn why an oil spill is so devastating for wildlife and the ecosystem with this hands-on activity. Kids experiment to find the best way to clean up oil floating on water and rescue the animals affected by the spill. ADVERTISEMENT

Learn more: Oil Spill Cleanup at Kitchen Counter Chronicle

Explore new ways to filter water

Basic water-filtration systems are pretty simple, but they make terrific science fair projects. Experiment with different setups, and find a way to make safe drinking water for people who need it.

Shake it up with earthquake science

Difficulty: Easy / Materials: Basic

Build simple model structures, then experiment to see how the actions of earthquakes affect them. Do research into what engineers and architects build in earthquake zones, then perform an experiment to see if you can improve on their findings.

Learn more: Earthquake Science at Love To Know

Grow a better garden using hydroponics

Hydroponics is the hot new gardening trend, but is it really a better way to garden? Find out with a DIY hydroponics gardening setup, comparing the results with traditional container gardening.

Find out if chewing gum really helps improve test scores

One of the more popular 6th grade science fair projects answers the question: Does chewing gum affect test scores? You’ll be surprised by the results!

Create top-notch compost in a cup

This is an easy science activity, and you can turn it into a science fair project by experimenting with different mixtures, layering, and conditions for your compost cups.

Learn more: Compost Cups at The Happy Housewife

Learn the best way to repel ants

Do you really need to use poisons to keep ants out of your home? Explore other possible solutions in this science project idea.

Simulate a tsunami and find ways to protect people

Build a model to simulate a tsunami, then come up with potential ways to minimize the damage future waves may cause.

Design a squirrel-proof bird feeder

Squirrels can be real pests at backyard bird feeders, and people are always trying to come up with new solutions to the issue. Can you be the one who finally solves this pesky problem?

Students who love to mix up chemicals and explore the results will enjoy these 6th grade chemistry science fair ideas.

Compare baking powder and baking soda

Baking powder and baking soda have similar names, but do they behave the same when used in a baking recipe? Bake up a few cakes and find out!

Devise a formula for creating the biggest soap bubbles

Soap bubble formulas vary, and some allow you to make bigger bubbles than others. What does it take to make the biggest bubble of them all?

Learn if tea and cola damage teeth

Difficulty: Easy / Materials: Medium

Use eggshells to explore how various beverages can stain teeth in this classic 6th grade science fair project. (It also teaches important lessons about dental hygiene!)

Learn more: Teeth and Eggs at Education.com

Look for iron in your breakfast cereal

The human body needs iron to be healthy, and many breakfast cereal boxes boast that they contain it. Conduct a 6th grade science fair project to find out if cereals really contain all the iron they say they do.

Find the best way to clean up old coins

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Form a hypothesis about which method will work best, then do some research to explain the results.

Learn more: Cleaning Coins Experiment at Gally Kids

Explore the effects of various sugars on yeast

Yeast needs sugar to grow, but does the type of sugar matter? And can you use sugar substitutes instead? This is a sweet way to find out!

Grow the biggest carbon sugar snake

Tinker with the formula to create the biggest carbon sugar snake possible! This is an engaging project that will wow other students too.

Learn more: Carbon Sugar Snake at KiwiCo

Determine whether soda has more sugar than juice

Which do you think has more sugar, a glass of Pepsi or one of orange juice? Boil away the water to find out in this 6th grade chemistry experiment.

Explore the properties of plastic made from milk

Making milk from plastic is actually pretty simple. Turn it into a science fair project by learning more about its strength, durability, and flexibility, and proposing a practical use for it.

Determine which type of juice has the most vitamin C

Vitamin C might not immediately cure your cold, but it definitely has health benefits. Does orange juice really have the most vitamin C? Conduct an experiment using an iodine titration method to learn the answer.

Calling all tinkerers! Build, create, and engineer a science fair project using physics principals.

Build a powerful paper-plane launcher

Here’s a cool 6th grade science fair project. Design and build a paper-airplane launcher that can fly a plane farther than anyone else’s.

Learn more: Paper Plane Launcher at Frugal Fun for Boys and Girls

Figure out the fastest way to cool a soda

Adding ice to a glass of soda cools it off, but it also waters it down. See if you can find a fast way to cool down soda while it’s still in the can or bottle instead.

Launch a bottle rocket higher or more accurately

A basic water-powered rocket isn’t that hard to assemble, but you can turn it into a bona fide 6th grade science fair project by playing around with the design. Figure out how to launch it higher, or change the trajectory to hit a certain target.

Identify the best insulating material

Insulating an item can prevent it from losing heat, like an insulated beverage bottle. What materials are the most effective insulators? How can you find out?

Drop parachutes to test air resistance

Use the scientific method to test different types of material and see which makes the most effective parachute. This is an easy project that’s perfect for kids interested in design and engineering.

Learn more: Parachutes at Education.com

Discover which produce best powers a clock

Here’s one of those classic science fair projects that you can really customize to make your own. Try testing out a variety of fruits and veggies, or playing around with connecting several types of produce to see what happens. This inexpensive kit has all the supplies you need.

Engineer the strongest craft stick bridge

Difficulty: Medium / Materials: Basic

This is a classic science activity for the classroom, but it works well for 6th grade science fair projects too. Form a hypothesis about the strongest type of bridge design, then build your own models to test it out.

Assemble the best simple motor

Looking for an idea that’s impressive but not too complicated? Build your own simple motor! You only need a few special supplies, including insulated copper wire and neodymium magnets . Turn it into a true 6th grade science fair project by altering the variables to see if you can increase the speed, reduce the noise, or make other improvements.

Learn more: DIY Motor at Home Science Tools

Learn if room temperature affects candle burn rate

This is a simple experiment to conduct, and it’s inexpensive too. Burn birthday candles in a variety of temperatures to see if they burn faster in higher temps.

Determine how much money energy vampires are wasting in your home

So-called “energy vampires” use up energy even when they’re not in active use. And energy costs money. Determine how much energy is being wasted by energy vampires in your home, and figure out how much money you can save on an annual electric bill by getting rid of them.

Engage students with a live demonstration showing the concepts they’re studying. Even better, give them a chance to get hands-on and do the science themselves!

Assemble motorized tiny dancers

Build a homopolar motor to make little spinning wire dancers. It takes a little practice to get it right, but it’s a really fun way to learn about motors and energy.

Learn more: Tiny Dancers at Babble Dabble Do

Amplify your smartphone with basic supplies

No Bluetooth speaker? No problem! Build your own from paper cups and a toilet paper tube. This is a 6th grade STEM challenge that’s sure to amaze kids.

Learn more: Cell Phone Speaker at The Mad House

Wear a gene bracelet

This is a neat way to talk about our genes. Have each student add pony beads to their bracelet to represent different traits. Then they can compare their differences and similarities. It’s likely that no two students will have the same bracelets!

Learn more: DNA Gene Bracelet at Pragmatic Mom

Make naked eggs

Students dissolve the calcium carbonate eggshell in vinegar and discover the membranes beneath that hold the egg together. It’s a unique and intriguing way to learn about acid-base reactions.

Learn more: Naked Egg at Making Memories With Your Kids

Experiment with naked eggs

Now, submerge those naked eggs in corn syrup and water to learn about osmosis. The eggs shrink or grow depending on the liquid they’re placed in. So cool!

Learn more: Naked Egg Experiments at Exploratorium

Send water traveling down a string

Explore the properties of cohesion and adhesion with this simple experiment using only water and cotton string. Expand the learning by trying the same experiment with different materials and liquids.

Learn more: Traveling Water at Rookie Parenting

Launch a two-stage rocket

The rockets used for space flight generally have more than one stage to give them the extra boost they need. This experiment uses balloons to model a two-stage rocket launch, teaching kids about the laws of motion.

Change the color of a liquid in an instant

Want to see your kids gasp in amazement? Perform the iodine clock reaction. You only need a few drugstore chemicals to change the solution from clear to dark blue faster than students can blink.

Levitate a Ping-Pong ball

Kids will get a kick out of this experiment, which is really all about Bernoulli’s principle. You only need plastic bottles, bendy straws, and Ping-Pong balls to make the science magic happen.

Learn more: Bernoulli Ping-Pong Ball at Buggy and Buddy

Use a fidget spinner to understand inertia

Learning about the laws of motion? This experiment uses a fidget spinner with three lights to show how mass and torque affect inertia.

Learn more: Fidget Spinner Inertia at Homeschool Momgineer

Build a heart pump model

Students gain a deeper understanding of the cardiovascular system when they construct a working model of a heart ventricle.

Learn more: Heart Pump Model at Tina’s Dynamic Homeschool Plus

Construct a pair of model lungs

Build model lungs using a plastic water bottle and some balloons to learn more about the respiratory system. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Lungs Model at Surviving a Teacher’s Salary

Dissect an owl pellet

Dig into an owl’s regurgitated meals (it’s not as gross as it sounds!) to discover what their diet consists of. Owl pellets are readily available online, and kids will be intrigued by what they find.

Learn more: Owl Pellets at Gift of Curiosity

Study sound waves with a spoon

With just yarn and a metal spoon, learn how vibrations create sound, and explore the role of conductors.

Learn more: Spoon Sound Waves at KC Edventures With Kids

Make sparks with steel wool

All you need is steel wool and a 9-volt battery to perform this science demo that’s bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: Steel Wool Reaction at The Homeschool Scientist

Create a colorful cell model

There are lots of cell model projects out there, but this might be one of the cutest ones we’ve seen! And it’s easier to assemble than you might think.

Learn more: Cell Model at Angelic Scalliwags

Extract DNA from a strawberry

It’s surprisingly easy to pull a strand of DNA from this sweet fruit. Teach your kids about genetics and DNA with this 6th grade science project that uses only basic household supplies.

Design a biodome

There’s so much to learn in this 6th grade science project. Kids build a scale-model biodome to learn more about different environments and ecosystems, decomposition, the food web, and more.

Learn more: Biodome Project at Teach Engineering

Pull an egg into a bottle

This is another classic science demo that never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar—no hands required.

Learn more: Egg in a Bottle at Left Brain Craft Brain

Make a pH indicator from a vegetable

Who knew such a simple material could be used to determine a substance’s acidity or alkalinity? Your students can explore acids and bases with this simple experiment.

Learn more: Red Cabbage Indicator at Compound Interest

Need supplies for your 6th grade science fair projects and activities? Check out these 24 Science Kits for Middle and High School That Make Hands-On Lessons Easy .

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24 Science Kits for Middle and High School That Make Hands-On Lessons Easy

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All Science Fair Projects

1000 science fair projects with complete instructions.

71 Science Fair Projects for 6th Graders

Our collection of 6th grade science projects offer a fun and hands-on way for middle school students to explore a variety of fascinating science concepts.

6th Grade Science Fair Project FAQ

What are some easy 6th grade science fair projects.

Each one of these science fair projects are easy for sixth grade students to set up and do!

Burn Rate of a Candle

Soap and Surface Tension

Baking with Yeast

Color and Taste

Growing Mold

Cleaning Teeth: A Science Project

Comparing Blood Pressure

The Chocolate Rock Cycle

Uncovering Fall Colors

Making Oobleck: Liquid or Solid?

Science fair project details right above the FAQ!

What is the best 6th grade science project ever?

We love the Color and Taste science fair project for sixth grade students. The same flavored drink is made red, orange and purple with food coloring. When the three drinks are given to people, see what people taste! It's fascinating to see how color affects our perception of taste in this classic science experiment!

If you're looking for more 6th grade science projects, check out the 6th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects →

What are some cool 6th grade science fair projects?

Get ready to be amazed by these super cool science projects for 6th graders! With just a few simple things, sixth graders will see how fun and cool science is!

Does Music Help Plants Grow?

Dogs vs. Humans: Bacteria in the Mouth

Singing Glass

Fast Food Nutrition

Cleaning teeth: A Science Project

Video Games and Blood Pressure

Moisturizer Test

What are 5 testable questions for 6th grade?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question!

What makes a cloud form?

Can drink and food taste different just by changing its color?

Does the color of light affect photosynthesis?

Does temperature affect seed sprouting?

What makes popcorn pop?

Here are more testable questions along with their science projects →

What are the top 10 science projects for 6th grade?

These are our top 10 science projects for 6th grade, with projects covering biology, chemistry, physics, medicine and health. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

Plant Growth: Hydroponics vs. Soil

Science project details above the FAQ!

Can I do a 6th grade science fair project in a day?

Yes! Quick experiments can be a great option for a science fair project! If you want to explore quick reactions, we have science project ideas on various topics to get you started.

Acids and bases: Test different fluids to see if they are an acid or a base!

Learn how to make your own acid/base indicator using red cabbage and use it to test different fluids! Make Your Own PH Indicator

Chromatography reactions: Separate out colors!

Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf! Uncovering Fall Colors

Heat reactions: Heat speeds things up!

Ever wondered if a balloon filled with water can withstand fire? Fire-Resistant Balloons

What are some hands-on ways to find inspiration for my science fair project?

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

How do I start a science fair project?

What should I do after I have a science fair project idea?

How do I make a science fair board?

What is the scientific method?

What is the engineering design process?

55 Super Fun Science Fair Projects For 6th Graders

Categories Activities & Ideas

Science is so fascinating, but it can sometimes be difficult to convince 11-year-olds that this is the case.

In order to capture their attention, you need to come up with something that will not only educate them, but also entertain them.

Below, we have listed 55 super fun science fair projects that 6th graders will love to try.

1. Carbon Sugar Snake

To start off this list, here’s an experiment that focuses on three heat-dependent chemical reactions. 

By lighting up some baking soda and sugar with a match, you can create a ‘snake’ made from carbon and sugar that continues to grow for up to 20 minutes!

2. Turn Milk into Plastic

With this experiment, you can teach your kids how to make plastic from lots of different materials, even including milk.

Once you’ve created the milky plastic, you can even melt and mold the organic casein polymer to make a new product.

3. Which Wheel Works Best?

This is a great way to teach kids about acceleration and velocity, and how the material of a wheel can affect the speed and resistance of a skateboard.

We don’t recommend trying this experiment if you’re not a very good skateboarder, however, as this could potentially result in injury.

4. Baking Soda-Powered Boat

By assembling a plastic bottle with some vinegar, baking soda, and a straw, you can create your very own mini speedboat.

The idea behind this experiment is very similar to making a baking soda volcano, as the chemical reaction creates pressure and movement.

5. Two-Stage Balloon Rocket

This is another experiment that kids can have lots of fun with, as well as learning all about how it works.

By attaching a balloon to the back of a straw, you can pump it up and release it across the room, allowing it to soar like a real life rocket.

6. Tiny Dancers (A Homopolar Motor)

By attaching a couple of wires and magnets to an AA battery, you can create your very own spinning ballerina!

You can even add some colorful crêpe paper to give your tiny dancer its very own tutu. Get creative, and learn all about how your dancer is spinning. 

7. Magic Spinning Pen

Magnets are some of the coolest tools ever, especially when you know how to use them to create fun tricks like these.

To create this magical spinning pen, you’ll need to use some small rods, a pen, a coin, and, of course, a couple of magnets.

8. Homemade Wigglebot

Did you know that you can make your very own robot using a plastic cup with googly eyes? This ‘robot’ can walk around all on its own!

This is another experiment that will teach your children how batteries work alongside motors.

9. Electromagnetic Train

Next up, we’ve got a science project that is so easy to set up, yet it will keep your kids entertained for hours.

An AAA battery attached to some magnets will become an electromagnetic train when placed at the entrance of a copper wire tunnel.

10. Holiday Card Circuits

Say goodbye to your run-of-the-mill handcrafted Christmas cards, and say hello to these impressive holiday card circuits.

By building a super simply circuit and taping it onto some cardboard, you can bring your festive designs to life… or, should we say, ‘to light ’? 

11. How to Make Fizzing Lemonade

Everybody loved carbonated drinks, but not everyone knows how they work. Where do the bubbles come from?!

Use this experiment to teach your kids (and yourself) how a chemical reaction using acid can turn your still drink into a bubbly one.

12. Solar-Powered Robot Bug

This solar-powered robot bug is also known as a ‘frightened grasshopper’. Why? Because it’s scared of the light!

Once you’ve assembled your robot bug, witness how it runs around when exposed to light, but comes to a standstill once it has been covered in shade.

13. Homemade Coffee Can Camera Obscura

Have your kids ever wondered how a camera works, or do they just accept it for what it is? If so, now is the time to teach them.

This camera is so easy to make from coffee cans and construction paper, and is so interesting and fun to use.

14. Heat Sensitive Color Changing Slime

From mood rings to heat-sensitive lip gloss, it is always impressive when an object can change color. This is all thanks to thermochromic pigment.

Add some thermochromic pigment to homemade slime made from white glue and liquid starch, and watch the magic happen.

15. DIY Crystal Landscapes

Have you ever seen anything as pretty and colorful as these vibrant crystal landscapes? You will find it surprising how easy they are to make.

You’re going to need to mix together some liquid bluing with water, salt, coloring, and ammonia to create these beautiful crystal creations.

16. Glow in the Dark Jello

Uh, hello? Glow in the dark Jello? Just when you thought that jello couldn’t get any more fun and yummy, this edible experiment pops up.

Boil some light-colored Jello with tonic water, let it cool in a mold, and then turn the lights out for the real fun to begin. 

17. How Do Roots Grow When the Direction of Gravity Changes?

We all know that gravity is what keeps our feet weighed to the ground, but what about plants? Does gravity affect the way they grow?

Make your own scientific container (made from a CD case), add some seeds, and switch up the directions every so often to test out this theory.

18. Seafloor Spreading Model

If you want to create a fun lesson plan to teach your students about the lithosphere, and how earthquakes occur, this is a great project to try out.

You will need to cut up a lot of paper for this project, so you can decide whether to do this beforehand, or to allow your students to fully make the project themselves.

19. The Science Behind Tsunamis

Tsunamis are terrifying natural occurrences, regardless of whether your hometown and country is at risk of them. 

Sometimes, learning about something can make it seem less scary. Teach your students about tsunamis using this experiment.

20. How Acidic Waters Make Rocks Disappear

It seems impossible to imagine that rocks can become worn down by water over time. With this project, you can work out how it happens, and why.

This is a great way to teach students about the effects of acidic water, and how stone can gradually become worn down and dissolved. 

21. Ice Cube vs. Wire

How could it be possible that one thin piece of wire could cleanly slice through an ice cube while leaving the rest of it intact?

Use a piece of wire and an ice cube to test the strange physics of water. To increase the fun, ask your students to guess how long it will take for the wire to split the cube.

22. DIY Heart Pump

Our bodies are fascinating vessels, and it can be so interesting to learn exactly what is going on inside ourselves.

This DIY heart pump may be a little fiddly to piece together, but once complete, you can show your students what is really going on inside their chests.

23. Engineering a Bridge

Engineering is a super fun and handy skill to have, whether it is something you want to make a career out of, or you’re just a crafty kind of person.

Use this sheet to ask your students how many popsicle sticks they think will need to create a sturdy bridge. Then, put their ideas to the test.

24. Earthquake Science Project

As we said earlier, sometimes knowing more about something (e.g., an earthquake) can make it seem a little less scary. 

This project involves creating sturdy structures, and then using books as a foundation to represent the earth’s plates. See how long your structures will stay standing, and work out how to improve them.

25. Magic Cloud in a Bottle

When we were kids, we thought clouds had the same texture as cotton candy, or the inside of a pillow. Nowadays, we know differently… but, do your students?

Teach them what a cloud really is by using rubbing alcohol and a pump to recreate what it really is, but in a smaller form.

26. Pop Rocks and Soda Science Experiment

Popping candy is so fun to eat, but do you know how it works? Why does it start popping when it goes into your mouth? (More on that later.)

For now, here is a fun variation on the ‘coke and Mentos’ experiment. Add some Pop Rocks into a bottle of soda, and see what happens…

27. Biodomes Engineering Design Project

By getting your students to design their very own biodome, they can learn more about how an ecosystem works.

You’re going to need some soil, seeds, sand, rocks, and even some creepy crawlies. Add them all into a plastic bottle, and take notes of what occurs inside.

28. Displacement and Buoyancy in Metal Boats

Archimedes’s principle, or the law of buoyancy, explains why some objects sink in water, while others don’t.

Use some foil and a bowl of water to test how well foil will float, depending on its size and shape. 

29. The Science Behind Edible Glass

Have you ever eaten glass? Normally we wouldn’t recommend it, but this edible glass is super tasty, and pretty easy to make.

Like real glass is formed through melted grains of sand, this glass is made from grains of sugar. Melt it on a baking sheet, allow it to cool, and then get eating (or smashing).

30. Cleaning Coins Experiment

When you begin to think about how many people have held the coins in your purse at some point, it can make your skin crawl a little. Coins are super dirty.

Try this experiment to see what material can clean coins the best, from apple juice to catsup. You’ll be surprised at how shiny your cents will be afterward!

31. Red Cabbage pH Indicator

Most people will remember learning about pH levels in school, and how much fun it was, seeing all the colors of the rainbow.

Blend up some red cabbage with water, and mix with everyday items – such as lemon juice and soda – to test their pH levels based on which color the liquid becomes.

32. Skittles Science Fair Project

Many of you may have seen this experiment through social media, with many people testing it out with their children at home.

This colorful project involves placing Skittles on a plate, and adding a couple of drops of water. Watch and see how the colors streak across each other.

33. Tooth Decay Egg Experiment

We all know that sugar is bad for our teeth, but how can you test that notion in a class of 6th graders? Well, by using some eggs!

Place hard-boiled eggs in separate containers filled with soda, energy drinks, orange juice, and milk, and wait to see how the eggs react to each liquid.

34. Science of Candy: Lightning in Your Mouth

Did you know that LifeSaver candy can glow in the dark? Yes , really! This is a great experiment to teach kids how friction can cause electricity, even in your mouth.

Go into a dark room, and chew on some wintergreen-flavored LifeSavers with your mouth open. Everyone around you will be able to see the lightning going off around your teeth.

35. Why Does Popping Candy Pop?

As we promised, here is an experiment that will teach children why popping candy does what it does!

There are tiny pockets of gas inside popping candy, which are released when exposed to liquid. Test this out by adding the candy to different kinds of liquids, from water to oil.

36. Which Fruits Rot the Fastest?

This is a pretty gross experiment, but it is still a fascinating one that the children are going to love. For this project, you will need to work with some rotting fruit.

Place different fruits in separate bowls, and observe how they decompose over the course of 14 days. Take note of what happens as they rot.

37. What Light or Heat Conditions are Favorable to Insects?

Have you ever been on your phone in a dark room, and a moth landed on the screen? Insects seem to be attracted to light… or, are they attracted to the heat of your phone?

Use this experiment to find out what conditions attract insects. You may want to avoid this one if you don’t like bugs, though.

38. Paper Towel Experiment

Paper towels are one of the world’s most underrated inventions, in our opinion. It really is fascinating how they can absorb so much liquid before breaking.

Is it really worth spending more money on a more expensive brand of paper towel? Test the theory by using different kinds of paper towels to clean up water, and see which works best.

39. Mini Marshmallow Launcher

This experiment can get a little messy, especially when kids are involved, so be warned before trying it…

Basically, this experiment is all about elasticity. You create a launcher using a balloon and a pool noodle, and use it to launch mini marshmallows around the room!

40. A Simple Ant Experiment

This is another messy experiment that will teach children more about creepy crawlies, and what they like to eat.

Find some ants, and use different kinds of food to lure them in. Take notes of which kind of food ants prefer to eat, and which ones they don’t like.

41. How to Make a Teleidoscope

Kaleidoscopes are truly magical contraptions, no matter what age you are. Did you know how easy it is to make your own at home?

This guide will teach you how to make your own teleidoscope ( a kaleidoscope without an end). All you need is some reflective sheets, colored paper, and a cardboard tube.

42. St Patrick’s Day Fizzing Pot Experiment

This experiment is kind of like those baking soda volcano experiments that we all made in school, but with an Irish twist.

Grab some small, black plastic pots, and add some baking soda, vinegar, and green food coloring inside. Give it a stir, and see what happens.

43. Seed Germinator

Is there anything more interesting than watching life form before your very eyes? By germinating some seeds, you can do this in your own classroom.

Use some fast germinating seeds, and place them in some soil on top of a coffee filter or paper towel inside a container. Watch them grow with each passing day.

44. The Biology of Yogurt

Yogurt is so tasty, but it can make some people feel a little weird when they think about what it is made out of. Live microorganisms have never tasted so good!

Providing that you have an oven on hand, along with some cooking utensils, you can show your children how to make homemade yogurt.

45. Pouring Water Down a String

String is super absorbent, which is what makes this experiment so fun and intriguing. All you’ll need is three materials to carry it out!

We recommend adding some food coloring to the water so that you can see the colors travelling through the string as it spreads.

46. How to Make a Modern Art Steady Hand Game

Anyone who has ever played a game of Operation will immediately know how this game works. Turns out, you can easily make this at home.

You will need some batteries, clip leads, copper wire, and more to create this fun game. Once the circuit is complete and the box has been built, you can start playing!

47. Rapid Color Changing Chemistry

We’re back with another magical color changing experiment! This time, you will be using vitamin C, iodine, liquid starch, and hydrogen peroxide to create a clock chemical reaction.

As you mix and pour each liquid into each other, you will notice that the color of the liquid will vastly change. 

48. Engineer a Cell Phone Stand

Science experiments are cool, but they’re even better when you get to create something that you can use more than once.

Use some popsicle sticks, paper clips, and rubber bands to make your very own cell phone stand. This will teach children how to make use of everyday objects, and recycle them.

49. Law of Inertia Experiment using a Fidget Spinner

The law of inertia states that if a person or object is moving at a constant speed in a straight line, they will continue to move until a force stops them. This force is, more often than not, friction.

You can test this law by using a light-up fidget spinner. Spin the fidget spinner without its lights on, and try again with them on. Time each try, and make note of your observations.

50. Catapults and Trajectory

This is probably the easiest experiment to attempt in this entire list. All you need are some wooden planks of different lengths and weights, and some random objects.

Try catapulting the same objects from different sized planks by stamping on them, and make note of how the size of the plank affects the trajectory of the object.

51. Lung Science Experiment

If you liked the DIY heart experiment, you will also like this one. Instead of making a replica of the human heart, this project recreates the human lungs.

You will need balloons, straws, and a clear plastic bottle for this experiment. One balloon will represent a healthy lung, while the second balloon (with another balloon inside) will represent a smoker’s lung.

52. Dissecting an Owl Pellet

Did you know that owls will regurgitate things that they have eaten that they cannot digest? These bones and pieces of gristle are spat out as a pellet.

Dissecting an owl pellet can be really interesting or really gross, depending on what kind of person you are. Either way, prepare to find some skeletons in your pellets!

53. Potato Battery

While we usually don’t recommend eating batteries, this is one battery that is actually pretty delicious. Yes, you can use a potato as a battery.

With some heavy copper wire, alligator clips, and some nails, you can connect a raw potato to a fully-functioning LED clock… and it will work !

54. Ice Cream in a Bag

This is probably the tastiest experiment in this list, and it is also one of the easiest. This is how you can make instant ice cream in a bag.

Fill a ziplock bag with ice and salt, and fill another bag with all the ingredients you need to make ice cream. Place the second bag in the first, and mush it around until it becomes ice cream!

55. Sugar Cookie Solar System

Finally, we have an entry that is not so much an experiment, but more of an activity that will help kids to learn about the planets in our solar system.

After all, what motivates children more than desserts?

Final Thoughts

Whether you have a child who’s interested in engineering, or they’re fascinating by stuff that changes color, there is something in this list for everyone. Each entry is as entertaining as it is educational!

We hope you found this guide helpful. Ready to learn more? Take a look at these 7th grade science experiment ideas .

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