Wheels and Cranks (Simple Machines)

Name: Wheels and Cranks (Simple Machines)
Author: David Glover
ISBN: 9781403485977

Author David Glover

Publisher Heinemann

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Book Details

Author(s)David Glover

PublisherHeinemann

ISBN / ASIN1403485976

ISBN-139781403485977

MarketplaceFrance 🇫🇷

Description ▲

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.