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Jiawen Yun
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Jiawen Yun
GeoGebra
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【案例】2018年全国1卷理科12题
判斷球體
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
兩位數加法
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正四面體空間中投影
proof30黃煒皓
阿波羅尼奧斯圓
編織圓
相反数 探究 （教材第9页）
Discover Topics
Piecewise Functions
Combinatorics
Definite Integral
Solids or 3D Shapes
Sine