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Author:
李伶芳
GeoGebra
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兩位數除以一位數（一）
畫出對稱圖形
異分母分數減法
三位數除以一位數（一）
兩位數除以一位數（二）
Discover Resources
圓錐曲線軌跡 (1)
正方體交角
barara magic stick
角錐體積-金字塔法
[洋葱] 2019河北中考25 圆与四边形
Discover Topics
Incircle or Inscribed Circle
Cosine
Statistics
Scalene Triangles
Coordinates