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阿基里德橢圓
Author:
陳頤
GeoGebra
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兩位數加法
GeoGebra笔记功能体验课件
三位數除以一位數（一）
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
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少一塊
Addition and Subtraction of Directed Numbers (1) 有向數加減(1)
二次函數的圖形
選修數學
y=sinx+1,y=2sinx,y=sin2x的圖形
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Cylinder
Normal Distribution
Parallelogram
Congruence
Circle