In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

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

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

This plaster fossil activity is a fun supplement to preschool science. Use plaster to make imprints of your child's handprints, footprints and other objects!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!