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1983全国文9
Author:
常振虎
GeoGebra
New Resources
判斷球體
異分母分數減法
錐體建築師
四邊形的特性
画直线等分三角形的面积
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ETV 對稱
正弦线与直线
百分數、分數和小數互化
正弦函數的伸縮及平移
翰林數學_1下_CH2-1_直角坐標平面的認識
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Division
Integers
Arithmetic
Centroid or Barycenter
Correlation