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Cathyyu920311
GeoGebra
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第八周作业
兩位數除以一位數（二）
異分母分數減法
【案例】2013年安徽高考15题
畫出對稱圖形
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ch14 p.30#31
Directed numbers
三角函數值 (特別角)
圆周展开
兩位數除以一位數（一）
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Sphere
Power Functions
Tangent Function
Similar Triangles
Constructions