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.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

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

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.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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

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

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

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

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.