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Is it easier to move heavy box with an inclined plane or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at transporting the box. This book supports engineering design standards for primary grades in the Next Generation Science Standards.
€45.09
语言 英语 ● 格式 PDF ● ISBN 9781467782951 ● 出版者 Lerner Publishing Group ● 发布时间 2015 ● 下载 3 时 ● 货币 EUR ● ID 5034067 ● 复制保护 Adobe DRM
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