Pulleys and Gears

ISBN: 9781403440853

作者: Angela Royston

出版社: Heinemann/Raintree

页数: 32

定价: $ 9.03

装帧: Pap

内容简介

In this exciting series, students will learn how simple machines such as levers, springs, and wheels power more complex machines that we use every day. Each title contains a project that allows the reader to make a machine using simple machines and household items. The text is reinforced with colorful photos, clearly-labeled diagrams, real-life examples, and easy experiments that allow students to observe the scientific concepts behind the machines.