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20180409 同分母分數減法 1ST FIXED
Author:
makkei
GeoGebra
New Resources
撒针估算面积实验
垂直線的斜率
直線的斜率
科氏力 (Coriolis Force)
多邊形的面積
Discover Resources
折扣 例3
Conductivity
切線段等長
不等式的應用
P4周界
Discover Topics
Pyramid
Prism
Perimeter
Parametric Curves
Addition