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.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

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.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

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.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

I scream, you scream, we all scream for homemade spearmint ice cream!

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

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

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Give your budding young observers a chance to discover simple machines at use in their own home.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

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

This science fair project idea produces sounds by creating vibrations using different objects.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.