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心電感應
Author:
李春培
GeoGebra
New Resources
四邉形 (四年級) 教師版
球體建築師
三位數除以一位數（一）
四邊形的特性
異分母分數減法
Discover Resources
天干與地支
equations of circle 2
正六角錐(旋轉，實體、透視)
測試繪本
跳棋棋盘
Discover Topics
Plane Figures or Shapes
Distributions
LCM and GCD
Geometric Transformations
Area