Synopsis
Sloping Up and Down explores the benefits and uses of the ramp. RobbO and RobbEE learn that a ramp is called an inclined plane. They discover that ramps are used for building stairs and escalators, and were even used as far back as ancient Egypt to build the pyramids.
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Sloping up and Down : The Ramp
Published by
Crabtree Publishing Company, 2014
ISBN 10: 0778704254
ISBN 13: 9780778704256
Used
Softcover
Seller: Better World Books: West, Reno, NV, U.S.A.
Seller rating 5 out of 5 stars
Condition: Good. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. Seller Inventory # 55165225-75