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Author:
徐长俊
GeoGebra
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異分母分數減法
拼砌四邊形
GeoGebra笔记功能体验课件
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
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天干與地支
基測試題五邊形滾動
二元一次不等式-極大值極小值
旋轉的概念
碎形
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Linear Functions
Straight Lines
Multiplication
Standard Deviation
Terms