Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

If Dorothy had lived a little further south, she might have been swept away to Oz by a hurricane.

Get to know Earth's star with with this diagram and vocabulary worksheet!

Children will connect their understanding of gases to real-world items as they circle all of the pictures showing gases.

This worksheet tests kids' understanding of basic heredity by asking them to match parent turtles with their offspring based on similar traits.

Fill in the blanks from the words listed in the word bank, then keep this sheet handy to prepare for tests and quizzes on life science and photosythesis.

After he fills in the blanks, your student can hold on to this worksheet on hydrogen for reference when preparing for tests and quizzes on physical science.

What is a plateau? What's the difference between a butte and a mesa? Look at these three land forms and learn to tell them apart with this worksheet.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Kids practice identifying solids for a lesson on the states of matter in this 1st grade physical science worksheet.

Kids practice identifying liquids for a lesson on the states of matter in this 1st grade physical science worksheet.

This worksheet features a scientific explanation and awesome photos of solar eclipses, which are extremely rare scientific phenomena.

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

Did you know that there is no new water on Earth? It all gets recycled and reused in a process that we call the water cycle.

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

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

Learn about the badgers that live in Yellowstone National Park.

Read about the mule deer, the most abundant deer in Yellowstone National Park.

What do juice, water, and tea have in common? Compare and contrast matter in this engaging second-grade worksheet!

Does your budding biologist know his plant parts? Get a great review of some important plant vocabulary with this info page.

Is a feather liquid, soft, spotted, or heavy? Practice describing everyday objects, or matter, with this second-grade science worksheet!

What do a key, a goldfish, and a tortoise shell have in common? Find out with this second-grade science worksheet!

Practice describing different objects and substances in this colorful worksheet!

Invite spellers on an inter-stellar adventure with this fun word scramble puzzle.

How much do you know about our home planet? Boost your Earth knowledge with this science printable.

What is the purpose of a narwhal tusk? Explore some interesting new findings about the narwhal, also known as the unicorn whale.

Learn about the similarities and differences between objects in this colorful science worksheet!

Jump-start your kid's excitement about kangaroos! Together, you can learn some cool kangaroo facts, like how kangaroos can jump up to 30 feet.

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.