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Difference of Two Squares 平方差 (2)
Author:
Alex CHIK
Topic:
Square
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
判斷球體
球体的体积推导
球体的体积推导（优化版）
第八周作业
球體建築師
Discover Resources
伸縮變換
Is this a prism 5
盒子的體積的副本
我的第一个GGB回本
S3 Ch4.3 即時測試4.3 三視圖(3D圖)
Discover Topics
Logic
Means
Upper and Lower Sum or Riemann Sum
Geometric Mean
LCM and GCD