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

Unearth fossils in this explorative third-grade worksheet!

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.

Children hone their powers of observation using this worksheet template.

Where is the liver located? Using the diagram as a reference, kids cut out the different parts of the liver from this worksheet and piece them together.

Don't be crabby! This worksheets introduces your child to a fascinating crustacean. Fill in the anatomy of a crab using the numbers in the word bank.

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

Dip your toes into a marsh habitat in this second- and third-grade worksheet!

Deserts might seem inhospitable to life, but there are actually plenty of animals that can live there!

Have fun learning about food chains in this charming science worksheet!

Explore a wetland habitat with this engaging short-answer worksheet for second and third graders!

Dive into a coral reef ecosystem with this life science worksheet!

Discover the animals and plants of the past in this fossil-focused worksheet!

Studying the human body? Get to know your body inside and out with this muscle diagram.

Learn about the Uinta ground squirrels of Yellowstone National Park.

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.

Analyze fossils with this engaging third-grade science worksheet!

Ever try to see a scorpion up close but were too scared? Get closer than ever with this scorpion anatomy worksheet. Fill in the body parts from the word bank.

Explore a tropical rainforest habitat and its inhabitants with this engaging worksheet for third graders!

Step into the swamp ecosystem with this engaging life science worksheet!

Stroll through the flora of a temperate deciduous forest in this third-grade worksheet!

Dig into the past with this third-grade worksheet all about fossils!

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

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

What's the animal that swims upstream? Help your child figure this out with this cold-blooded animal crossword puzzle worksheet.

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

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.