What exactly is a life cycle? Students have the chance to find out in this unit as they learn about the cycle of changes the arctic fox, harp seal, platypus, rabbit, reindeer, walrus, barn owl, chicken, penguin, puffin, alligator, crocodile, sea turtle, frog, ant, butterfly, earthworm, honey bee, ladybug, and mosquito undergo through their lives. Key terms such as hatchling, larva, pupa, pup, and more are included. Students can personalize this book by coloring the illustrations and tracing the key words in the space provided. Incorporate some fun and handwriting practice into science. A review activity sheet with answer key is also included. 27 pages total.