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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數加法
兩組對邊相等和有直角的四邊形
sanjiaohanshu
錐體建築師
兩位數除以一位數（二）
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動畫
相同圖形的拼砌（梯形）
梯形面積 Area of Trapezium
cube
比較角的大小3
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Perimeter
Mode
Cuboid
Exponential Functions
Unit Circle