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باش بەت
خام ماتېرىيال
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優良作品5
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數加法
異分母分數減法
算柱 (兩位數)
三位數除以一位數（二）
錐體建築師
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平行四邊形之變奏I
生活
P2 math
線性規劃例10
平行四邊形的高