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部分佔全部的百分率 :例2的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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異分母分數減法
兩位數加法
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
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Pappus古定理證明
perimeter of rectangle
folding paper by Mr LO WY
雙曲線3--等軸法
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