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ズーム ロールオーバーで画像拡大

Rolling Along: The Wheel and Axle (Robotx Get Help from Simple Machines) (Library Binding)

Bailey, Gerry
56.03 SGD
会員価格
50.43
English

Product Description

"Rolling Along explores the benefits and uses of the wheel and axle. RobbO and RobbEE build a cart to make it easier to move a heavy load, and learn how the wheel and axle are also used for lifting and turning."--

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