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proof30黃煒皓

Author:郭亮偉

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兩組對邊相等的四邊形
異分母分數減法
三位數除以一位數（一）
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题

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青字歌
Comparing_fraction
一筆畫
擲兩個硬幣的機率分布的副本
正弦函数图像的动态绘制

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LCM and GCD
Pythagoras or Pythagorean Theorem
Conic Sections
Fractions
Reflection

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