This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

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

For kids learning geography or earth science, this is the perfect review sheet for drilling students on common geography terms and phrases.

What does the Earth look like? Find out all about the nooks and crannies that cover the planet with this landforms worksheet.

Children learn to identify the tracks of a pine marten, chipmunk, mountain lion, mountain goat, and grizzly bear in this matching worksheet.

What is the Earth? Here is a reading passage and a word search to help your kid get acquainted with Earth science.

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

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

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

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

Dreams can be delightful or downright terrifying. Discover the science behind dreams and try to figure out what your dreams say about you.

Too familiar with flies and mosquitoes? Learn about their insect order Diptera as your child colors this bug-lover's fun page.

How many teeth does an alligator have? Find out with this fun worksheet, dedicated to teaching you and your child all about alligators!

What's your favorite animal? Kids love answering that question, and with this animal research graphic organizer, they can write all about it.

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

What is the purpose of a hard shell or a long neck? Discover different adaptations with this matching worksheet for second and third graders!

Learn all about Alexander Fleming, the man who invented penicillin and the happy accident that brought him to it.

Butterflies and moths may have very different colors, but they are from the same insect order! Learn about lepidoptera with a fun coloring page.

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

Little gardeners, get to know your plants! See the cycle of a plant from its birth to adulthood, and read a bit about photosynthesis too.

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

Learn about the great horned owl of Yellowstone National Park, a bird so big and mean that it has the nickname, "tiger owl."

Do you ever see shapes in the stars at night? In ancient times, people named these shapes, and now we know them today as constellations!

What is the rocky cycle? This info sheet answers that question with the help of a colorful diagram and a shout out to important vocabulary.

Did you know jaguars are great swimmers? Kids will learn all about rainforest animals with this fun activity page, including a word search and coloring!

Why do some desert animals have large ears? Why do others have scales? Learn the answers to these questions and more with this life science worksheet!

Pigs, cows, and ducks, oh my! The clues in this animal crossword puzzle worksheet will help you remember what animals there are on a farm.

These STEM design challenge cards ask learners to build something new for a specific reason or purpose and are a great way to foster creative thinking.

Help your child practice his science skills with this science worksheet, which will challenge his knowledge of reptiles and ask him to solve a puzzle!

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.