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Author:
Lin Ching Chieh
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
直角坐標平面上的旋轉變換
四邊形的特性
第八周作业
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百分數（小學）：折扣 / 賺賠（HTML5 版）
Perigal's Dissection
Rectangle_04
數線(小數的認識)
我的傑作6C04
Discover Topics
Step Functions
Tangent Function
Trapezoid
Division
Conic Sections