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Author:
树常青
GeoGebra
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百分數及其應用
比較五件物件的重量
双心四边形
撒针估算面积实验
活动三：应用性质
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展開基本
正立方體
第 57 屆國際數學奧林匹亞競賽試題
梯形堆垛
a sin(bx+c) + d 的圖形的副本
Discover Topics
Straight Lines
Ellipse
Piecewise Functions
Sequences and Series
Geometric Distribution