For Mark Leona Marilyn Joyce Jan and Dan Love you forever RF Copyright 2012 by Sally M Walker and Roseann Feldmann All rights reserved International copyright secured No part of this book may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Lerner Publishing Group Inc except for the inclusion of brief quotations in an acknowledged review Lerner Publications Company A division of Lerner Publishing Group Inc 241 First Avenue North Minneapolis MN 55401 USA For reading levels and more information look up this title at www lernerbooks com Library of Congress Cataloging-in-Publication Data Put wedges to the test by Sally M Walker and Roseann Feldmann p cm Searchlight books How do simple machines work Includes index ISBN 978 0 7613 5325 6 lib bdg alk paper ISBN 978 0 7613 8010 8 eBook 1 Wedges Juvenile literature I Feldmann Roseann II Title Walker Sally M TJ1201 W44W35 2012 621 8 dc22 2009032230 Manufactured in the United States of America 2 DOC 3 1 14
Contents Chapter 1 WORK page 4 MACHINES page 10 Chapter 2 Chapter 3 Chapter 4 WHAT IS A WEDGE page 14 HOW WE USE WEDGES page 23 WE USE WEDGES EVERY DAY page 30 Chapter 5 Learn More about Simple Machines 39 Glossary 38 Index 40
Chapter 1 WORK You do work when you plant flowers What are other examples of doing work You work every day At home one of your chores may be planting flowers At school you work when you cut paper for a project 4
You are working when you push a toy boat in the water You are also working when you bite into an apple or a cookie It may surprise you to learn that playing and eating are work too You do work when you eat 5
