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迭帶
Author:
余銘芬
GeoGebra
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錐體建築師
四邉形 (四年級) 教師版
算柱 (兩位數)
判斷球體
找出對稱軸
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椭圆与圆的关系
ex_1
利用Geogebra說明y=ax2+bx+c圖形性質
高中數學第三冊
我的第一个GGB绘本
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Diagrams
Incircle or Inscribed Circle
Linear Equations
Logarithm
Line Segment