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Pulleys and Gears
Angela Royston
Paperback (Heinemann, July 3, 2003)What pulls a flag up a flagpole? How does a bicycle chain help the bicycle move? What makes an escalator move? Pulleys and gears are simple machines that can be used to make other machines work. When you take an escalator, ride in a car, use a fishing rod, or wear a watch you are using pulleys and gears. Pulleys and Gears explains what these machines are and how they help you do everyday things.
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Springs
Angela Royston
Paperback (Heinemann, July 3, 2003)Springs have been used for more than 500 years as a simple machine that can make other machines work. When you open a screen door, open an umbrella, sit on a sofa, or sleep on a mattress you are using springs. This book explains what springs are and how they help you do everyday things. Topics include: Why won't a Slinky go up stairs? How can a catapult help a place take off? How does a clock work?
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Ramps and Wedges
Angela Royston
Library Binding (Heinemann/Raintree, Jan. 1, 2001)Explains how ramps and wedges work as simple machines to make such objects as cutters, jackhammers, and zippers work, and suggests ways to use them in everyday life.
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Levers
Angela Royston
Paperback (Heinemann, July 3, 2003)How does paddling move a boat forward? Why does a wheelbarrow have only one wheel? What does a counterweight do? Levers are simple machines that can be used to make other machines work. When you used a shovel, play on a seesaw, or use a bottle opener you are using lever. Levers explains what levers are and how they help you do everyday things.
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Ramps and Wedges
Angela Royston
Paperback (Heinemann, July 3, 2003)Why do skiers use a zigzag path down steep slopes? How does a zipper work? How does a lock work? Ramp and wedges are simple machines that can be used to make other machines work. When you open a lock, cut something with scissors, zip up your coat, or use a doorstop you are using ramps or wedges. Ramps and Wedges explains what these machines are and how they help you do everyday things.
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Wheels and Cranks
Angela Royston
Library Binding (Heinemann/Raintree, Jan. 1, 2001)Explains how wheels and cranks work as simple machines to make such objects as cars, spinning wheels, and pencil sharpeners work, and suggests ways to use them in everyday life.
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Wheels and Cranks
Angela Royston
Paperback (Heinemann, July 3, 2003)Wheels and cranks are simple machines that can be used to make other machines work. When you ride a bicycle, ride in a car, or use a school pencil sharpener you are using wheels or cranks, This book explains what wheels and cranks are and how they help you do everyday things. Topics include: What is a cam wheel? How does pedaling make bicycle wheels move? What are tire treads used for?
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Pulleys and Gears
Angela Royston
Library Binding (Heinemann/Raintree, Jan. 1, 2001)Explains how pulleys and gears work as simple machines to make such objects as watches, bicycles, and trolleys work, and suggests ways to use pulleys in everyday life.
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Screws
Angela Royston
Paperback (Heinemann, July 3, 2003)Why is a spiral staircase easier to climb? How can a screw lift a heavy car? What is a propeller for? Screws have been sued for over 2,000 years as a simple machine that can make other machines work. When you turn a faucet on or off, ride on an airplane, or open a soda bottle you are using screws. This book explains what screws are and how they help you do everyday things.
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