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代入消去法
Author:
Gideon Huang
GeoGebra
New Resources
三位數除以一位數（一）
兩位數加法
判斷球體
畫出對稱圖形
第八周作业
Discover Resources
Mean of a Large Set of Data 大量數據的平均數
角的認識
柯西不等式 (4)
拋物線3--平行四邊形法
勒洛四面体（拼接法）
Discover Topics
LCM and GCD
Trapezoid
Subtraction
Perimeter
Plane Figures or Shapes