Pulleys

ISBN: 9781403436788

作者: Chris Oxlade

出版社: Heinemann/Raintree

页数: 32

定价: $ 9.03

装帧: Pap

内容简介

This series offers a clear introduction to simple machines--what they are, what they're made of, and how we use them in today's world. Exciting examples of each machine's applications draw on the world familiar to a child, including some that may be "hidden" in household objects or everyday fixtures.