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20161110試算表紅玫瑰
Author:
susan
GeoGebra
New Resources
異分母分數減法
算柱 (兩位數)
兩位數加法
判斷球體
兩位數除以一位數（二）
Discover Resources
Angle Sum in a Triangle
http://www.qsir.org/?p=8853
Copy of 固定周界的長方形的面積變化
周界
禪繞畫2
Discover Topics
Matrices
Probability
Quadratic Functions
Rhombus
Standard Deviation