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

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

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

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

Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.