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Author:
陈铁成
GeoGebra
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【案例】2013年安徽高考15题
第八周作业
異分母分數減法
兩位數加法
画直线等分三角形的面积
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Spotlight 探射燈
HKMO 2008 Question 3 Demonstration (Geometric Construction)
不規則圖形的周界(T)
Drag Q. Locus of P?
地球儀
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Normal Distribution
Logarithm
Symmetry
Prism
Parabola