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範例：畫圈圈的筆
Author:
羅驥韡 (Pegasus Roe)
範例：畫圈圈的筆
GeoGebra
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兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩位數除以一位數（一）
找出對稱軸
異分母分數減法
Discover Resources
Quiz on Equation of Straight Lines 直線的方程：測驗
正弦公式(證明)
長方形
同位角
Light reflected in hyperbola
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Numbers
Tree Diagrams
Conic Sections
Hypergeometric Distribution
Plane Figures or Shapes