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優良作品1(孟倫)
Author:
Ching-Hui Chou
GeoGebra
New Resources
三位數除以一位數（一）
兩位數加法
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
找出對稱軸
Discover Resources
Key stage 1
三角形全等的理由 – 題2
Elementary school math
三視圖3d眼鏡
微分量 (Differentials)
Discover Topics
Straight Lines
Upper and Lower Sum or Riemann Sum
General Quadrilateral
Secant Line or Secant
Logarithm