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Author:
Lin Ching Chieh
GeoGebra
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画直线等分三角形的面积
四邊形的特性
兩位數除以一位數（一）
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
平面幾何
優良作品2(薇如)
doto属性研究
纏繞SEQUENCE版
拋物線2--焦點法
Discover Topics
Scalene Triangles
Random Variables
Conic Sections
Median Value
Linear Equations