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2012全国1卷理11
Author:
jjx01
GeoGebra
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第八周作业1
撒针估算面积实验
双心四边形
折扣
平行線的判定
Discover Resources
百分數
Quiz on Scientific Notation
時鐘小幫手
L: y=mx+1
海宇的第一个GGB绘本
Discover Topics
Addition
Ellipse
Geometric Transformations
Incircle or Inscribed Circle
Upper and Lower Sum or Riemann Sum