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Author:
林淑娥
GeoGebra
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祖冲之的期望:内棋与外棋
讀磅
圓周公式的應用
空间中两直线的位置关系
圓的基本性質
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圓周公式應用題2
zentangle
GGB4
複合圖形
生日问题
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Parabola
Ellipse
Normal Distribution
Rational Numbers
Pythagoras or Pythagorean Theorem