Description - Simple Machines by Buffy Silverman
-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.
Buy Simple Machines by Buffy Silverman from Australia's Online Independent Bookstore, BooksDirect.
Other Editions - Simple Machines by Buffy Silverman
A Preview for this title is currently not available.