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堆疊(圓、正方形、正三角形)
Author:
林彥均
Topic:
Circle
,
Equilateral Triangles
,
Square
GeoGebra
New Resources
四邉形 (四年級) 教師版
異分母分數減法
兩位數除以一位數（二）
直角坐標平面上的旋轉變換
判斷球體
Discover Resources
小學數學科 HTML5 Applets
轨迹2016.4.16
Geometry: Types of Angles 2 (幾何：角的種類 2)
面積
算幾不等式
Discover Topics
Logarithm
Inequalities
Centroid or Barycenter
Arithmetic Operations
Stochastic Process or Random Process