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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
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祖冲之的期望：内棋与外棋
兩位數加法
【案例】圆柱体内放置一个大球六个小球
漂亮的摇摆曲线
【案例】2013年安徽高考15题
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angle0428
畢式定理 (11)
圓錐截痕
勝者即正義，可愛即正義~
一數的百分之幾是多少？
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Congruence
Random Experiments
Conic Sections
Vectors 2D (Two-Dimensional)
Sequences and Series