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Author:
曾己泉
GeoGebra
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龙形曲线-分形龙2
比較五件物件的重量
百分數及其應用
第八周作业2
折扣
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正9邊形
三角形數
frog 4
正方形
計算
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Arithmetic Operations
Division
Right Triangles
Histogram
Vectors