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

Looking for a quick reference about gravity and a definition for kids? This two page worksheet and activity has you covered!

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

Let your kid's knowledge of leaf vocabulary climb as high as a tall, tall tree with this fun word search.

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

Take a plunge under the surface of the earth! With this worksheet as your guide, you may explore the geological processes of our planet.

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.

Learn the ins and outs of one of the body's most important organs: the heart!

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.