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根據百分率找數量（一）: 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
画直线等分三角形的面积
畫出對稱圖形
異分母分數減法
兩位數加法
球体的体积推导（优化版）
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圓形,三角形軌跡觀察
練習
貝氏曲面
九九乘法表的認識
正方体展开图的副本
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Percentages
Ratios
Stochastic Process or Random Process
Optimization Problems
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