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Multiplication of Directed Numbers
Author:
chisunch1
GeoGebra
New Resources
拼砌四邊形
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
球体的体积推导
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椭圆画法wj
生活中的平面圖形關係─線對稱
整數點
兩位數除三位數(商<10)
元旦快乐（制作：孟宝兴）
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Curve Sketching
Equations
Definite Integral
Median Line
Quadratic Equations