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Author:
杨欣霞
GeoGebra
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四邉形 (四年級) 教師版
畫出對稱圖形
三位數除以一位數（二）
找出對稱軸
球体的体积推导
Discover Resources
大樂透開獎機2
資料點 x1, x2, ..., xn
大圓內的十二個圓
田中太郎
圓錐展開圖
Discover Topics
Percentages
Combinatorics
Area
Linear Equations
Conditional Probability