Gizmos and Gadgets 在线电子书 图书标签:
发表于2024-12-26
Gizmos and Gadgets 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
Kids will have a blast investigating the hows and why of motion, friction, gravity, energy, balance, and spinning by constructing awesome working contraptions. Find out how parachutes, catapults, hovercraft, and whirligigs work -- and more
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Gizmos and Gadgets 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024