Character-led stories introduce preschool children to the science of simple machines. Follow the adventures of Screw, Wedge, Ramp, Pulley, Wheel and Lever as they help each other to perform simple tasks.
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格式 PDF ● 网页 24 ● ISBN 9789186580704 ● 编辑 Felicia Law ● 出版者 Bramblekids ● 发布时间 2018 ● 下载 3 时 ● 货币 EUR ● ID 6655433 ● 复制保护 Adobe DRM
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