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符成岗
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符成岗
GeoGebra
New Resources
GeoGebra笔记功能体验课件
異分母分數減法
三位數除以一位數（一）
近似值：有效數字
第八周作业
Discover Resources
因式分解及配方法
扇形的弧長與面積
Plane
三位小數GAME
Example 5
Discover Topics
Vectors
Hyperbola
Centroid or Barycenter
Geometric Distribution
Cone