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费马数列
Author:
靳道阳
GeoGebra
New Resources
比較五件物件的重量
直線的斜率：水平變化 & 鉛垂變化
撒针估算面积实验
斐波那契螺旋弧线（表格法）
常见四边形是否是双心四边形
Discover Resources
happy birthday
科學記號與小數點的位移
Comparing fractions using number lines and rectangles
test
平行四邊形堆朵
Discover Topics
Diagrams
Isosceles Triangles
Integers
Area
Symmetry