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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
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異分母分數減法
【案例】2013年安徽高考15题
拼砌四邊形
三位數除以一位數（一）
四邊形的特性
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可動多邊形
雙曲線與共軛雙曲線
Net of circular cone
畢氏定理 (勾股定理) <Pythagorean theorem>
P.5_FRACTION_NPMPS
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Planes
Division
Reflection
Polygons
Sequences and Series