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.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

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.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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