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NCM(2nd)
Author:
ISAAC LAM
GeoGebra
New Resources
錐體建築師
找出對稱軸
球体的体积推导（优化版）
異分母分數減法
兩位數加法
Discover Resources
封閉區域著色２
對摺平行四邊形
sine graph 變換 with examples
全等—正方形的旋转
翰林數學_1下_CH4_一元一次不等式解的圖示法
Discover Topics
Subtraction
Vectors
Circumcircle or Circumscribed Circle
Isosceles Triangles
Upper and Lower Sum or Riemann Sum