Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

Ever wonder what the earth is made of? Practice reading and writing, and learn about the four layers of planet Earth.

Constellations are not just named after animals, some of them are named after people! Learn about the constellation Sagittarius with this fun worksheet.

What happens to water after it rains? Learn about the stages of the water cycle in this colorful worksheet!

What is the Earth? Here is a reading passage and a word search to help your kid get acquainted with Earth science.

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

One of the most famous and easy to spot constellations is the Big Dipper! Formally known as Ursa Major, this constellation was named after a bear.

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

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.

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

Challenge your science student to record a shadow over the course of a day and make the connection between shadows and the time of day.

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

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

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

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

Discover the difference between comets and asteroids in this stellar earth and space science worksheet!

Discover how water flows in this informative environmental science worksheet!

Get to know the Apollo 11 space mission in this science and history worksheet!