This science fair project idea produces varying pitches of sound.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

How powerful is the reaction between baking soda and vinegar? Find out here!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

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

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

The purpose of this science fair project is to build a basic radio.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

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.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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

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

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!