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

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!

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

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.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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!

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

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.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

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

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

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.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

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

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.