Levers

You might not realize it, but you use many kinds of levers every day. The fork you use to eat, the broom you use to sweep, and the scissors you use to cut paper are all levers. Even the bones inside your body are levers. Levers help us lift things and get work done—readers learn all about the science behind levers in this fun and fact-filled book. Bright photographs and illustrations accompany accessible text to help readers understand the science concepts presented in this book. Readers wi...