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Author:
chen mingchuan
GeoGebra
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兩位數加法
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
兩位數除以一位數（一）
四邉形 (四年級) 教師版
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PMC 2014-15 Q4
畢式定理 (10)
旋轉方塊
小六容量與體積_裝箱問題
倍长中线以及一线三等角的应用
Discover Topics
Vectors 3D (Three-Dimensional)
Similarity Transformation or Similarity
Straight Lines
Rhombus
Rotation