Based on natural learning theories, this book for elementary teachers aims to integrate math into the broader curriculum through the exploration of facts, skills, and concepts in relevant and meaningful contexts. It also seeks to create a collaborative learning environment and provides innovative evaluation methods that depart from traditional means of testing. Special features of this program include: The development of cooperation, independence, perseverance, and positive work habits in students The strengthening of skills in processes of identifying, describing, researching, classifying, recording, justifying, and presenting information. How Big Is the Moon? is a practical reference for teachers who know that effective learning is based on childrens own interests and needs.