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中間人
Author:
tam
GeoGebra
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四邉形 (四年級) 教師版
四邊形的特性
找出對稱軸
GeoGebra笔记功能体验课件
兩位數加法
Discover Resources
補角關係
生活中的平面圖形─點與線的性質
齿轮咬合
立體圖形_截面
正方体3*3堆叠的实时三视图
Discover Topics
Optimization Problems
Arithmetic Operations
Kite
Definite Integral
Integral Calculus