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Pressing down : the lever
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Pressing down : the lever
-- Lever
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26 Total copies, 26 Copies are in, 0 Copies are out.
Pressing Down explores the benefits and uses of the lever. RobbO and RobbEE learn how a lever can be formed in three different ways to do different kinds of work--lift and lower, separate, and open.
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Authors
Bailey, Gerry, 1945-
Spoor, Mike
Subjects
Levers.
Simple machines.
Language
English
Series
The Robotx get help from simple machines Robotx get help from simple machines.