Pulleys and Gears 在线电子书 图书标签:
发表于2024-11-08
Pulleys and Gears 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
In this exciting series, students will learn how simple machines such as levers, springs, and wheels power more complex machines that we use every day. Each title contains a project that allows the reader to make a machine using simple machines and household items. The text is reinforced with colorful photos, clearly-labeled diagrams, real-life examples, and easy experiments that allow students to observe the scientific concepts behind the machines.
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Pulleys and Gears 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024