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紙幣
Author:
Tse Sir
GeoGebra
New Resources
拼砌四邊形
第八周作业
兩位數加法
畫出對稱圖形
球体的体积推导
Discover Resources
優良作品1(沛綺)
均分除法（分數÷整數）
Testing 20170308
心電感應
数线段
Discover Topics
Logarithm
Sine
Kite
Equilateral Triangles
Pie Chart or Circle Chart