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腳踏車輪圈
Author:
李春培
腳踏車輪圈
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
異分母分數減法
第八周作业
Discover Resources
公因數與公倍數
第一冊
大小相同串珠
Pyth. theorem
河內塔 3D (Tower of Hanoi 3D)
Discover Topics
Straight Lines
Arithmetic Operations
Surface
Parallelogram
Tangent Line or Tangent