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用和或差的平方做因式分解
Author:
鍾文欽
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數加法
四邉形 (四年級) 教師版
四邊形的特性
球体的体积推导
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用面積逼近圓周率
釘點紙畫三角形
Indices 4
比較利益
旋轉線段
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Frequency Distribution
Geometric Mean
Circle
Stochastic Process or Random Process
Natural Numbers