Learn about some of the major U.S. watersheds in this fascinating science and geography worksheet!

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Meet the red wolf, an endangered species of animal that was once very common, but in the past 50 year nearly became extinct!

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

Students practice classifying items as liquids or solids for a lesson on the states of matter in this fourth grade physical science worksheet.

It's a paper parachute brigade! Learn how to build your own parachute, and learn how the parachute was invented over 500 years ago.

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.

Learn about the "dwarf planet" in our solar neighborhood. There are more Pluto facts to learn, if you figure out the answer to the question on the page.

Learn the science of volcanic eruption with this cutaway diagram

Children will learn important facts about food chains in these worksheets.

Learn the importance of natural adaptations with this inquisitive activity!

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

Learn all about the science of the movies and the basic concepts behind how they work.

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

Learn how energy changes forms with this fourth- and fifth-grade physical science worksheet!

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

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Let your curious kid learn a little bit about how fireworks work in this summer science sheet.

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Learn all about essential laboratory equipment with this hands-on worksheet for fourth and fifth graders!

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

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

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

Here's a stormy science adventure that will blow your socks off! Learn about tracking hurricanes with this map of coordinates.

Budding biologists can learn all about human digestion with this information page, complete with a diagram of the digestive system.

Learn Saturn facts with this science printable, like that it is one of the large gas planets in our solar system!

Open your ears for some interesting science! Your little biologist will learn the basic parts of the ear with this diagram.

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

Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.