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隔板法解组合问题
Author:
赵林
GeoGebra
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判斷球體
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
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量度活動所用的時間 (時、分、秒)
BkD_act15_05c
GGB4
除法
高中二年級平面向量的副本
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Unit Circle
Tangent Line or Tangent
Geometric Distribution
Stochastic Process or Random Process
Right Triangles