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Author:
chengshihfeng
GeoGebra
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球體建築師
判斷球體
三位數除以一位數（一）
異分母分數減法
四邉形 (四年級) 教師版
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Mean of a Large Set of Data 大量數據的平均數
动态三角形
Pyramid (Angle between Plane HBC and HCD)
拋物線3--平行四邊形法
最新的解一元二次方程式方法
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Terms
Logarithm
Linear Functions
Reflection
Combinatorics