Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

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

Use your knowledge of sea creatures to fill out this crossword puzzle.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

You have over 600 muscles in your body! Kids can try this muscle anatomy word search featuring 14 important muscles.

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

Review the different body parts with a fun crossword! This is a great way for your little doctor-in-training to review the basic organs and their functions.

There are a lot of structures that make up a new plant, called a seedling. Your child will learn what they're called with this life science word search.

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

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.

Think creatively about classroom objects with this STEM-focused scavenger hunt!