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

Have you ever wondered what keeps the moon in orbit? Newton's first law gets a quick introduction, too, in this worksheet for kids. Check it out!

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

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.

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

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Kids can explore ideas of storytelling and science as they fill in this comparison grid with their opinions. Start a conversation of ideas with this worksheet!

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

Encourage your child to take a nature walk, using the prompts on this worksheet to write and draw their observations of plants, animals, sounds, and more.

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

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

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.