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整式乘法-平方差公式
Author:
孟宝兴
GeoGebra
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兩位數除以一位數（一）
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
畫出對稱圖形
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線性規劃
摺紙1
Directed numbers
指数函数性质和图象平移
雙曲線的副本
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Rectangle
Special Points
Difference and Slope
Continuity
Arithmetic