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

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

This worksheet is a quick-reference tool of space vocabulary for kids, with an exercise to use the words properly in provided sentences.

This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Study the night sky with this hands-on science worksheet for third and fourth graders!

Searching for a worksheet to help your fourth grader with science? This printable will help him with geology.

Looking for a fourth grade worksheet to help your kid with astronomy? This printable will help him learn the relative sizes of planets.

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

Looking for a worksheet to help your kid with science? This printable will help him with his knowledge of geology.

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

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!

Discover how cover crops enrich soil and support healthy crop growth with this research-based worksheet for fourth and fifth graders!

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