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HKCEE 2009 Q17
Author:
tkyggb
GeoGebra
New Resources
兩位數加法
柱體建築師
球体的体积推导（优化版）
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
Discover Resources
Sequence指令練習(圓面積的展開)
常態分布和標準差 Normal Distribution and Standard Deviation
音調與空氣柱
畫鐘面的副本
繪本
Discover Topics
Trapezoid
Planes
Quadrilaterals
Quadratic Equations
Cone