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螢橋國中
GeoGebra
New Resources
百分數及其應用
异形操场
平行線的判定
撒针估算面积实验
第三周作业效果演示
Discover Resources
GeoGebraBook(for20151202)
翰林B4講p192-例1
圓外切及內切
circle
外心
Discover Topics
Pyramid
Symmetry
Right Triangles
Pythagoras or Pythagorean Theorem
Isosceles Triangles