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ie 6
Author:
LAM YU SANG
GeoGebra
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三位數除以一位數（一）
兩位數加法
GeoGebra笔记功能体验课件
柱體建築師
找出對稱軸
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圓的平移
橢圓教學_2016
孟氏定理 (Menelaus' theorem)
congruent (ASA)
圓外冪性質
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Addition
Similar Triangles
Parallelogram
Numbers
Inequalities