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九九乘法表的認識
Author:
鍾文欽
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
異分母分數減法
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
找出對稱軸
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初中八年级奥数：面积与面积法
標準差：測驗
雜類(Miscellaneous)
做過圓外兩點的一圓並與另一圓相切
Copy of 英01
五圓相切
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Histogram
Straight Lines
Optimization Problems
Special Points
Logic