Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

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

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.