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

Practice classifying different animals in this engaging life science worksheet, created for second and third graders!

Help your child practice her spelling and vocabulary with this fun worksheet! Discuss with your child what it means to be cold-blooded.

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!

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

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

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

This coloring page doubles as an info sheet, all about the burrowing owl! Your child will get to draw his own owl using the grid helper.

Stretch your backbones and learn about the creatures that have a spine and those you don't!

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

Classify the animals in this life sciences matching worksheet!

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

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!

Discover what lives in the depths of the sea in this second- and third-grade habitat worksheet!