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Author:
陳伯宇
GeoGebra
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三位數除以一位數（二）
兩位數加法
柱體建築師
畫出對稱圖形
四邊形的特性
Discover Resources
交點的極限
等邊三角形
眼睛的毛病(近視及遠視)
曲面指令练习（柱球转化）
翰林數學_2下_CH4-2_平行四邊形性質
Discover Topics
Coordinates
Constructions
Vectors
Difference and Slope
Inequalities