This science fair project idea experiments with spinning color wheels and optical illusions.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

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

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

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

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

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

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

What happens when colored beams of light mix? You might be surprised.

Learn with makes water molecules work with this fun and easy science activity!

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

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

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

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

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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.