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折扣 例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
畫出對稱圖形
画直线等分三角形的面积
兩位數除以一位數（一）
兩位數加法
四邉形 (四年級) 教師版
Discover Resources
生活中的平面圖形問題2
Addition and Subtraction of Polynomials 2 (多項式的加減法2)
Template: 對稱01
折线匀速动点工具
幂函数
Discover Topics
Binomial Distribution
Scatter Plot
Centroid or Barycenter
Means
Parallelogram