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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

An home science experiment for older students that teaches about the science behind heat.

This science fair project idea produces varying pitches of sound.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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.

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.