Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Go from a butterfly beginner to an expert with this worksheet, full of pretty butterflies and tons of information about where butterflies live.l

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.