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

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.

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

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!