What's the weather like today? Here's a word search perfect for any budding meteorologist.

These two children sure look alike -- maybe because they're twins!

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

Use this cool 2-page worksheet to make your own big dipper clock!

Discover Earth’s four major systems, or spheres, in this engaging fifth-grade worksheet!

Explore how Earth’s surface can change in this investigative second-grade worksheet!

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.

Print out a set of weather-themed postcards to give your child practice identifying seasons. These weather postcards also allow kids to practice writing skills.

Here's a great worksheet for teaching your kids all about the planet Mercury. Did you know that it's the smallest planet in our solar system?

Discover Earth’s different spheres with this fourth- and fifth-grade earth science activity!

Discover some of the ways that Earth’s natural resources are used in this first-grade worksheet!

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

Discover the impact of water on Earth’s landscape with this fourth-grade erosion worksheet!

Water covers 70% of Earth’s surface—but where exactly is it? Find out in this fifth-grade worksheet!

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

Uncover secrets of the past with this third-grade worksheet about fossils!

Did you know snowflakes are so unique, there are no two alike? Teach your child about how snow forms with this worksheet.

Cave formations come in all kinds of shapes and sizes; get the scoop on common cave formations with this two page printout with a maze and vocabulary.

This page is all about building your kid's natural resources vocabulary words, along with research skills.

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

Challenge your child's knowledge of astronomy with this space-themed worksheet, which focuses on the timing of cosmic events.

This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

Here's a great way to teach your kids more about our solar system. This worksheet focuses on the dwarf planet, Pluto.

Your young cosmonaut will work on reading comprehension, story sequencing, and creative writing while he's diving into the far reaches of our universe.