In this science fair project, students use the streak test to tell minerals apart from each other.

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

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Test whether plants can grow without sunlight and water.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Test your friends to find out if you can replicate the placebo effect's incredible results.

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.

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

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.

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

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

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

This science fair project examines how seeds hitchhike on animals and clothing.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This project determines what category of person is most likely to be ticklish.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

This easy project for little hands uses mushroom spores to make an imprint of the mushroom, and the result is very beautiful.

Word color association is just a fancy way to talk about the way we connect colors with words.