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perimeter
Author:
Yvonne Fung
,
GeoGebra Institute of Hong Kong
GeoGebra
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異分母分數減法
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
兩位數加法
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拋物線規
雙曲線
中心对称的概念
面積4
認識半徑
Discover Topics
Stochastic Process or Random Process
Arithmetic Mean
Scalene Triangles
Subtraction
Quadratic Functions