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semicircle
Author:
Tzeng, Shyuh-yaur
GeoGebra
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四邉形 (四年級) 教師版
找出對稱軸
第八周作业
兩位數除以一位數（一）
三位數除以一位數（二）
Discover Resources
小學數學比賽 2014
廣義角的代換(90度加減角度)
幾何問題_圓01
三角函數
test1
Discover Topics
Circumcircle or Circumscribed Circle
Cylinder
Plane Figures or Shapes
Linear Equations
Indefinite Integral