Your students need to understand that stuff doesn't just happen -- it has a life cycle. Using common products like the telephone, this lively book helps students learn about the flow of energy and matter through Earth's system. Seven illustrated sections (useful as stand-alone units or as a cumulative program) give you hands-on activities to teach: -- What is a life cycle?-- How does product design influence the life cycle?-- What are products made of and why?-- How can products be less wasteful at the end of their useful lives?Ideal for teachers who cover integrated science, physical science, environmental science, and Earth science. Plus: Get a free "Life Cycle of a Pencil" classroom poster.