Articles liés à Gears

Gears - Couverture souple

Ollerenshaw, Chris; Triggs, Pat

 
9780713633542: Gears

Synopsis

Explains what gears are used for and why some gears work better than others. There is a blueprint at the end of the book to build a model helicopter. This book is part of a series which uses toys to educate children about science.

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