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happy birthday
Author:
李春培
happy birthday
GeoGebra
New Resources
畫出對稱圖形
四邉形 (四年級) 教師版
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
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GeoGebra的認識與安裝
P6 圓周01B
大小不同串珠
Copy of 費氏螺旋 (試算表)
IF指令遮蔽圓方程式圖形(類似限制函數)
Discover Topics
Logarithm
Polygons
Boxplot
Cone
Matrices