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

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Making your own glass cleaner is easy, effective and inexpensive!

This science fair project idea explores whether talking to a plant will help it grow.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

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

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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.

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.

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