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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 science fair project, young children discover what happens when two fluids that have different densities get together.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

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

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

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!

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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!

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.

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.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

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

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!

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.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

This science fair project idea produces sounds by creating vibrations using different objects.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

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