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Author:
Tzeng, Shyuh-yaur
work1
GeoGebra
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四邊形的特性
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
拼砌四邊形
兩位數加法
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橢圓與雙曲線折紙
廣義角的代換(90,270)
國旗
旁心
指数与一次函数结合的定积分的动态演示.许兴华数学
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Constructions
Step Functions
Kite
Upper and Lower Sum or Riemann Sum
Reflection