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特製的門 2
Author:
李春培
特製的門2
https://www.facebook.com/video.php?v=730160733696759&fref=nf
GeoGebra
New Resources
異分母分數減法
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
四邊形的特性
兩位數加法
Discover Resources
三角形外心
quadrilaterals 3
DSE Mathematics
多物件逐一動畫
遊戲
Discover Topics
Hypothesis Testing
Symmetry
Pythagoras or Pythagorean Theorem
Polygons
Plane Figures or Shapes