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教学素材：对数函数底数与图像位置关系
Author:
清风拂琴，陌上花开
GeoGebra
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盈利與虧蝕
科赫雪花
撒针估算面积实验
三角函数 的副本
圓的基本性質
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比較圖形大小2
碎形
Slope(斜率公式)
初中数学教学素材
三角形点阵
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Linear Programming or Linear Optimization
Diagrams
Trapezoid
Distributions
Probability