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

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

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

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

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

Where to flower babies come from? Use this word search to learn about the different pollinators in our environment, and how they help spread plant seeds.

Practice geology vocabulary with this challenging crossword puzzle.

Don't let your kid bark up the wrong tree! Engage him in a word search filled with tree terms, boosting his attention to detail and problem solving skills.

Let your kid's knowledge of leaf vocabulary climb as high as a tall, tall tree with this fun word search.

Break down a word to create new ones with this fun worksheet for second through fifth graders!