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11-18的加減組合
Author:
Yin Kelvin Wong
GeoGebra
New Resources
兩位數加法
球体的体积推导（优化版）
錐體建築師
拼砌四邊形
判斷球體
Discover Resources
因式分解(十字相乘法)
絕對值正弦函數圖形
弧長與圓周角成比例
My First Geogebra Book
geogebra和初中数学课程深度融合
Discover Topics
Piecewise Functions
LCM and GCD
Quadratic Equations
Square
Multiplication