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Author:
Lo Ka Ling
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（一）
兩位數加法
【案例】2018年全国1卷理科12题
直角坐標平面上的旋轉變換
Discover Resources
判斷柱體 5
funny draw
優良作品5(盈彤)
双动点异速折线运动分段函数绘制
交錯級數(Roger B. Nelsen)
Discover Topics
Addition
Geometric Transformations
Similarity Transformation or Similarity
Similar Triangles
General Quadrilateral