Simple Machines by Buffy Silverman; Megan Cotugno (General Editor)Call Number: 621.8 SIL
ISBN: 9781432923105
Publication Date: 2009-06-14
How did the Ancient Egyptians build the pyramids? What is an Archimedes' screw? Which wedge do you use every time you eat? 'Do It Yourself' offers an exciting new approach to understanding and investigation. Each book helps you conduct your own experiments and activities to learn more about the world around you.
Simple Machines by