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Author:
葉天宏
GeoGebra
New Resources
異分母分數減法
画直线等分三角形的面积
四邊形的特性
兩位數除以一位數（二）
算柱 (兩位數)
Discover Resources
rainbow
math1
zuiduan
阿基米德多面體
pic2-6一次函数的副本
Discover Topics
Polygons
Distributions
Hyperbola
Pie Chart or Circle Chart
Pythagoras or Pythagorean Theorem