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TB-CJH-OVER.
Author:
Hyacinth Wang
GeoGebra
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四邉形 (四年級) 教師版
錐體建築師
兩組對邊相等的四邊形
畫出對稱圖形
兩位數加法
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三角形重心(相關說明)
乘方
請自訂一個工具
Copy of 二次函數圖形
六上：圆的面积公式推导
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LCM and GCD
Hypothesis Testing
Set Theory
Congruence
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