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Roger Test Draw
Author:
rogerp
Test draw of 2nd degree polynomial, ver2
GeoGebra
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三位數除以一位數（二）
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
畫出對稱圖形
拼砌四邊形
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異分母分數加法
錐體體積與柱體體積的關係
九九乘法表的認識
P.5 面積問題04
砌長方形找因數
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Sphere
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