Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Try this chemistry experiment with your curious kid and get some "shocking" results!

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

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.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.