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Author:
Chen, shih-hsiung
GeoGebra
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GeoGebra笔记功能体验课件
兩位數加法
兩位數除以一位數（二）
四邉形 (四年級) 教師版
三位數除以一位數（二）
Discover Resources
乘法公式1
廣義角的代換(180,360)
Problem1:(md+me+mf)/(ad+be+cf)=a
畢氏定理
圈圈移動
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Equilateral Triangles
Sine
Conic Sections
Integers
Trigonometry