圖書標籤: 兒童 Geek
发表于2024-11-23
Battery Science pdf epub mobi txt 電子書 下載 2024
Master the real science behind electricity and have a blast doing it. Includes a genuine Klutz alkaline battery, a buzzer, a propeller, a light bulb, a motor and other useful doodads – everything you need for all 8 projects. Toss in a little history, and you’ve got an activity book so good, it’s shocking.
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Battery Science pdf epub mobi txt 電子書 下載 2024