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黎曼和(Riemann Sum)
Author:
宋政蒲
Topic:
Upper and Lower Sum or Riemann Sum
GeoGebra
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兩位數加法
【案例】2013年安徽高考15题
拼砌四邊形
三位數除以一位數（二）
錐體建築師
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轉盤
All in one (centres of triangle)
數線
線性規劃
正方体镂空模型（通用）
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Rhombus
Difference and Slope
Arithmetic
Rotation
Diagrams