In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

This science fair project idea determines which method of hand cleansing is the most effective.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Using a toy race car kids create a visual model of the Doppler Effect.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Use pepper and soap to discover some fun facts about the properties of water.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?