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黎曼和
Author:
sheri.chen
GeoGebra
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兩組對邊相等的四邊形
異分母分數減法
判斷球體
兩位數除以一位數（一）
画直线等分三角形的面积
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高線
教學－橫切面
雨刷中的數學
優良作品2(祥恩)
【範本】資料整理與統計圖表─盒狀圖
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Vectors 2D (Two-Dimensional)
Terms
Planes
Statistical Characteristics
Centroid or Barycenter