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B4_1-1練習卷4
Author:
廖傑成
GeoGebra
New Resources
找出對稱軸
兩位數加法
画直线等分三角形的面积
柱體建築師
兩位數除以一位數（二）
Discover Resources
五上_面積（二）
四点共圆
周界-平移法(練習一)
sierpinski carpet
k126各國基地
Discover Topics
Quadratic Functions
Tree Diagrams
Centroid or Barycenter
Tangent Line or Tangent
Linear Equations