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slide9
Author:
tao sun
GeoGebra
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百分數及其應用
比較五件物件的重量
正方形雪花图案
科赫雪花
斐波那契螺旋弧线（表格法）
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Primary Mathematics
正整數的指數律練習
Copy of 包含除法（整數或分數 ÷ 分數）
學測指考
外心
Discover Topics
Trigonometric Functions
Conic Sections
Upper and Lower Sum or Riemann Sum
Cuboid
Straight Lines