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GeoGebra
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Author:
Big Lee
GeoGebra
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兩位數加法
第八周作业
三位數除以一位數（一）
GeoGebra笔记功能体验课件
四邊形的特性
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Homework1
複合圖形(六)
立體網狀圖
直线和圆的位置关系
动圆与两圆外切与内切(2)
Discover Topics
Upper and Lower Sum or Riemann Sum
Plane Figures or Shapes
Prism
Integers
Means