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水流問題(黑板)
Author:
鍾文欽
GeoGebra
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拼砌四邊形
三位數除以一位數（一）
画直线等分三角形的面积
算柱 (兩位數)
找出對稱軸
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Quiz on Naming of Congruent & Similar Triangles 全等及相似三角形的命名：測驗
ABC 3
對稱圖形
畫等腰直角三角形
保持比例
Discover Topics
Function Graph
Subtraction
Secant Line or Secant
Numbers
Arithmetic Operations