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sharon扭曲的正方形
Author:
杨秀芬
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
四邉形 (四年級) 教師版
三位數除以一位數（二）
兩位數加法
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Dilate 習作
Multiplication of Polynomials 1(多項式的乘法 1)
餘數處理
極式：切線方向
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Addition
Parametric Curves
Division
Quadratic Equations
Frequency Distribution