Splitting apart : the wedge (Robotx get help from simple machines)
by Bailey, Gerry, 1945- (Author)
Summary
"Splitting Apart explores the benefits and uses of the wedge. RobbO and RobbEE need to build a wedge-shaped machine to move the snow piled outside their workshop. They find lots of other uses for a wedge, too."-- Provided by publisher. Full description
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