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

Looking for a worksheet to challenge your child's knowledge of science? This printable asks him to identify a solid, liquid and gas.

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

Analyze everyday objects and identify states of matter with this second- and third-grade science worksheet!

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.

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

Kids draw examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

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

Kids write down examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

Learners will get to know the bald eagle, the national bird of the United States and an inhabitant of Yellowstone National Park.

Is orange juice a solid or liquid? What about a cookie? Practice classifying everyday objects in this first- and second-grade states of matter worksheet!

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

Kids follow corn as it grows from seed to vegetable on this simple cut-and-paste growth chart.

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

Can melted wax turn back into solid wax? Can scrambled eggs turn back into raw eggs? Learn the answers to these questions and more with this second-grade worksheet about reversible and irreversible changes!

Discover how water flows in this informative environmental science worksheet!