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chloeliu
GeoGebra
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圓的切線方程
祖冲之的期望：内棋与外棋
【案例】2013年安徽高考15题
三位數除以一位數（一）
兩位數除以一位數（一）
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雜類,其他
convolution_demo1
Quiz on Centres of Triangles 三角形的中心：測驗
gjh-h01-01 畢氏數三角形
十分逼近法及根號概念
Copy of 20151104 四邊形 P2
Discover Topics
Isosceles Triangles
Prism
Trapezoid
Line Segment
Planes