Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

Children familiarize themselves with the tracks of a duck, bobcat, coyote, deer, raccoon, and black bear in this life sciences worksheet.

Help your 2nd grader crack the code using triple digit addition and subtraction to find out what parts of camels can be used to make some tasty dishes.

Your child will write about his or her favorite animal. Kids will research their favorite animals online or at the library, then write down three facts.

Are cats trying to talk to us when they purr? Discover the meaning behind the purr in this worksheet that explores the three main types of cat purrs.

Unearth fossils in this explorative third-grade worksheet!

Blue whale facts include that calves weigh up to three tons at birth and adults can be as heavy as 200 tons. Get other cool blue whale facts on this worksheet.

In this worksheet, children practice identifying animals of North America by their tracks.

Practice identifying living and nonliving things with this first- and second-grade science worksheet!

The next time you're on a hike, be sure to take this leaf chart to guide you in identifying different types of leaves!

This short nonfiction text will provide students with an opportunity to become more comfortable with identifying and defining academic vocabulary words—and they'll have fun learning all about the life cycle of a chicken in the process!

Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

Become a genetic detective with this inquisitive life-science worksheet!

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

Learn about fish, amphibians, birds, mammals, and reptiles with this colorful life science worksheet for first and second graders!

Ponder the pedigree of plants with this worksheet about inherited traits for upper elementary students!

Can you figure out how the Triceratops got his name? Study this Triceratops fact sheet and see if you can guess.

Learn about the Uinta ground squirrels of Yellowstone National Park.

This worksheet featuring food and natural resources touches on the subject of food chains.

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

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

Explore grasslands and their fauna in this thought-provoking worksheet!

Learners will discover a simple overview of the human muscle system in this introductory worksheet.

Explore the lush plant life of the tropical rainforest in this second- and third-grade worksheet!