Work

Focusing on simple machines and how they help us,do work in our daily lives, this fun and,informative new series introduces young readers to,several basic concepts of physics. In this volume,easy-to-do experiments, colourful photos, clear,text and fun activities teach kids about how they,work every time they move, and how simple machines,make work easier. Includes a list of websites, a,further reading list, a glossary, an index and,full-colour photos on every page! Ages 7-9.