These kids are playing a game, trying to move a person with a simple machine. Which will work better-an inclined plane or a lever? Readers will see them compare the simple machines to decide. This book supports engineering design standards for primary grades in the Next Generation Science Standards.
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语言 英语 ● 格式 PDF ● ISBN 9781467782975 ● 出版者 Lerner Publishing Group ● 发布时间 2015 ● 下载 3 时 ● 货币 EUR ● ID 5034068 ● 复制保护 Adobe DRM
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