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

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

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.

Give your budding young observers a chance to discover simple machines at use in their own home.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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

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

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!

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

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