Publisher's Synopsis
Focusing on simple machines and how they help us work in our daily lives, this fun and informative series introduces young readers to several basic concepts of physics, such as work, force, gravity and friction. Including easy-to-do experiments, colourful photos, clear text and fun activities, this volume introduces the lever. Now kids can discover how levers are used and how they make work easier with simple experiments and clear explanations. Includes a list of websites, a further reading list, a glossary and an index. Ages 7-9.
