Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

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 does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Use a basic tape recorder and some favorite books to help your first grader read smoothly--and make someone's day in the process!

Celebrate spring with a cute cut-out bug button your child can make out of colorful felt and markers!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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!

Covered in patterns and reflective texture, this paper purse is sure to stand out!

Draw some educational value out of a summer stocked full of adventures!

All you need to put together this guitar is an old shoebox. Soon your kid will be rocking out while saving room in the landfill.

Your child will hop with delight as he make this delicious, edible bunny out of marshmallows.

Celebrate St. Patrick's Day by making personalized art out of some Celtic letters.

Help your second grader craft some lovely, personalized Valentine's Day cards--out of kitchen materials!

Do different types of oil mix or stack? Find out in this science fair project idea!

Teach children how to upcycle dried-out markers with this homemade paint-making activity!

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

Bring out your child’s creative side with this fun Halloween-themed craft.

Put old, worn-out picture books to work by constructing a book birdhouse, perfect for welcoming spring.

Your child can get out the acrylic paints and create a colorful paperweight perfect for dad this Father's Day!

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Create cake pops in shaped like eyeballs in this extra sweet, gross-out Halloween baking activity!

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Craft like the Colombians did in ancient times and make these line drawings out of twine, rope, or yarn.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Thousands of witches that come out to celebrate Halloween. Now, your child can make her very own self-standing witch.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.