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Author:
李春培
I love you
GeoGebra
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【案例】2018年全国1卷理科12题
斜率的值
空间中两直线的位置关系
祖冲之的期望：内棋与外棋
兩位數除以一位數（二）
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拋物線標準式101.11.22
齿轮咬合
动态演示
Measure of Dispersion
數值滑桿動畫
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Constructions
Secant Line or Secant
Addition
Triangles
Logarithmic Functions