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Author:
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GeoGebra
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兩位數加法
画直线等分三角形的面积
兩組對邊相等的四邊形
拼砌四邊形
畫出對稱圖形
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平行四邊形變奏曲III
王宏銘Proof93
Light reflected in hyperbola的副本
乘法计时训练
翰林數學_2下_CH3-4_大角對大邊
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Arithmetic Mean
Kite
Parallelogram
Definite Integral
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