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大十字
Author:
陳柄何
GeoGebra
New Resources
龙形曲线-分形龙
第八周作业1
撒针估算面积实验
第八周作业2
比較五件物件的重量
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幾何鋪磚
p05 eqidistant from two lines
Probability of forming a triangle
摺長方形
椭圆中的一个定值问题的动态演示.许兴华数学
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Multiplication
Functions
Geometric Transformations
Upper and Lower Sum or Riemann Sum
Square