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Author:
Cathyyu920311
GeoGebra
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四邉形 (四年級) 教師版
【案例】2013年安徽高考15题
判斷球體
sanjiaohanshu
畫出對稱圖形
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Addition and Subtraction of Directed Numbers (1) 有向數加減(1)
Vector equation in R2
心型線
相同圖形的拼砌（三角形）
公切線的條數 的複本
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Cube
Boxplot
Solids or 3D Shapes
Differential Calculus
Arithmetic