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.

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

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.

Can you match the scientist with the unit of electricity or power that is named after him?

Explore the applications of electrical energy with this helpful second-grade worksheet!

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

Ancient mariners mistook the manatee for a mermaid! Your young biologist won't make the same mistake after learning about the manatee with this worksheet.

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Can your child name 10 animals that make their home in the mountains? After completing this worksheet, he'll know all about mountain habitats!

Discover different types of energy with this third- and fourth-grade science worksheet!

Use a seesaw to see what happens when opposing forces become balanced or unbalanced!

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Learn about the science behind one of nature's most awesome spectacles: monsoons.

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

Dig into the past with this third-grade worksheet all about fossils!

Blast off into space with a fun planet printable. This one features Jupiter, the largest planet in our solar system.

Do you measure distance in inches or seconds? When do you use miles? Answer these and more with this third-grade worksheet about the customary system of measurement! 

Read about one of Yellowstone National Park's coolest animals, the big horn sheep.

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

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

Determine which magnets have the strongest force in this third- and fourth-grade worksheet!

The next time you're on a hike, be sure to take this leaf chart to guide you in identifying different types of leaves!

Learn about some of the most common forms of energy with this helpful one-pager for third graders!

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!

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.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.