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.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

This craft is an excellent way to learn about African-American history, and it also provides fine motor practice.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

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!

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

Help your first grader design and create his very own bird feeder out of an empty milk carton.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

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

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

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

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.