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proof 64 潘研
Author:
郭亮偉
GeoGebra
New Resources
判斷球體
兩組對邊相等的四邊形
第八周作业
異分母分數減法
三位數除以一位數（二）
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Quiz on Addition and Subtraction of Directed Numbers (1) 有向數加減測驗(1)
圓周率圓周率
奠基
畫圖用底圖(含輔助格線)
軸對稱的副本
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Division
Random Variables
Cube
Conic Sections
Similar Triangles