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作業一
Author:
侯杰材
使ˋㄕ
GeoGebra
New Resources
異分母分數減法
拼砌四邊形
兩位數除以一位數（二）
判斷球體
四邉形 (四年級) 教師版
Discover Resources
旋轉體 (Disk Method)
分割圓餅圖
Plane
(002)80201辛宇婕
正方形纸片剪出正三角形（顶点在边上）
Discover Topics
Inequalities
Calculus
Right Triangles
Centroid or Barycenter
Subtraction