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.

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.

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.

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

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

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

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.

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.

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

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.