Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

Learn all about light refraction by simply placing your pencil in a glass of water. Warning: your pencil may not be quiet the same afterward.

Here's a great introduction to five famous astronomers for kids. See who got the star party started with this worksheet.

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.