Work and Simple Machines

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Simple machines are used to overcome forces all the time-our arms are lifting machines that overcome the force of gravity. Read on and find out how to make and understand simple machines.
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Overview

Simple machines are used to overcome forces all the time-our arms are lifting machines that overcome the force of gravity. Read on and find out how to make and understand simple machines.
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Editorial Reviews

Children's Literature - Children's Literature
Twelve projects are each explained in a two-page spread with lots of photos showing each step. The projects are based on simple machines such as levers, gears, and pulleys, yet the projects are anything but simple. The culminating project entails making six gears out of cardboard and toothpicks, and mounting those gears so that they transfer the rotation from horizontal to vertical. Most of the projects involve five or six steps and would require the dexterity of a skilled adult assistant. This book could be used by a gifted child who is unusually mechanical, but more likely it will be used in conjunction with an adult. These activities would work well in Big Brothers/Little Brothers programs and boys clubs (girls too). Any one of the projects in this book could be modified for a good science fair project. 2000, Millbrook Press, Ages 8 to 12, $21.90. Reviewer: Seth Berg
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Product Details

  • ISBN-13: 9780761311591
  • Publisher: Lerner Publishing Group
  • Publication date: 3/28/2000
  • Series: Science Factory Series
  • Pages: 32
  • Age range: 6 - 9 Years
  • Product dimensions: 8.76 (w) x 11.57 (h) x 0.37 (d)

Table of Contents

Your Factory: Hints and tips on how to prepare for your projects 4
Levers: Build a machine that uses levers 6
Working in Pairs: Make a grabber using levers that work against each other 8
Friction: Make a friction game 10
Climb the Hill: Use friction to get a tank up a slope 12
Smooth Running: Use marbles as wheels 14
Wheel and Axle: Build a car and make it turn 16
Battling Tops: Make spinning tops and watch them battle 18
Lifting a Load: Learn to lift by building a well 20
Ropes and Pulleys: Lift up heavy weights with your own pulley 22
Up the Hill: Use a slope to pull more easily 24
Wheels and Cogs: Make cogs that turn 26
Types of Gears: More about gears 27
Finding Out More: Interesting phrases and mind-blowing facts about simple machines 30
Index 32
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