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Author:
余銘芬
GeoGebra
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三位數除以一位數（一）
判斷球體
【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
畫出對稱圖形
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兩直線夾角101.11.21
三餘弦定理問題
雙心運動
期末作業(作品集)
untitled a01
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Congruence
Tree Diagrams
Random Experiments
Circumcircle or Circumscribed Circle
Root