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! 

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

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

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

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

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

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

Learn more about a tide pool habitat with this life science worksheet for second and third graders!

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

Do you know why Mars is called the Red Planet? Find out that and more on this planet printable.

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

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

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

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

These clever birds harden and disguise themselves as tree branches when threatened. Learn more and do some coloring with this worksheet.

Scorpio, the scorpion, is one of the zodiac signs but you can also find him up in the stars at night!

Did you know that 763 Earths could fit inside Saturn? Learn more fun facts about Saturn on this fun science printable.

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

Many legends told by ancient people have characters that you can find as star formations called constellations! This one is Andromeda.

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

Without reflective surfaces, this biker would have a much more dangerous ride. Can you find all five reflective surfaces present in this scene?

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

Did you know chameleons can sleep upside-down? Learn more about chameleons with this fun worksheet, jam-packed with fun facts and activities!

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.

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

Whether you say buffalo or bison, it is still the largest land mammal in North America. Discover a bit more about this majestic animal.

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.

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.

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.