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Wheels and Cranks

David Glover

Paperback (Heinemann, May 8, 2006)

What would the world be life if we didn't have wheels? How do you think the ancient Egyptians moved huge stones to build the pyramids? Why does a mountain bike have such thick knobby tires? How do you think toys moved before batteries were invented? This title shows you how different kinds of these two simple machines are all around you to make your work and play easier.

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Wheels and Cranks

David Glover

Library Binding (Rigby Interactive Library, June 1, 1997)

Introduces the principles of wheels and cranks as simple machines, using examples from everyday life.

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Wheels and Cranks

David Glover

Paperback (Heinemann/Raintree, Jan. 1, 2002)

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Wheels and Cranks

David Glover

Library Binding (Heinemann, May 5, 2006)

What would the world be life if we didn't have wheels? How do you think the ancient Egyptians moved huge stones to build the pyramids? Why does a mountain bike have such thick knobby tires? How do you think toys moved before batteries were invented? This title shows you how different kinds of these two simple machines are all around you to make your work and play easier.