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Author:
Chan Yip-Cheung
GeoGebra
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判斷球體
sanjiaohanshu
異分母分數減法
三位數除以一位數（二）
四邊形的特性
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equation of circle
gjh-g06-01 乘法公式綜合應用
二次函數
折正三角形
第八周的作业
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Cosine
Matrices
Mode
Equations
Parabola