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Fun-Maker Learning by playing box
帶孩子玩中學 科學原理與機構概念
迷你機構系列 -迷你扭力投石機
設計靈感來自古羅馬時代攻城投石機
Tips:
1.想像置身古羅馬時代利用巨型投石機攻城
2.上網google投石機的類型有哪些
3.仔細觀察扭力投石機與槓桿原理的關係