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/Users/caixianglin/Documents/GGB文件/刻度尺读数练习
Author:
向霖 蔡
GeoGebra
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兩位數加法
四邉形 (四年級) 教師版
異分母分數減法
畫出對稱圖形
球體建築師
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阿波羅尼斯相關問題：與兩相切圓外切和一圓內切
九點圓
對鄰邊之對
圖解畢氏定理
砌長方形找因數
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Cylinder
Quadratic Equations
Piecewise Functions