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

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.

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.

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