一个意外在“几何概型”一课的引入环节,我设计了这样一个问题:在区间[0,6]上任取一个实数,设这个实数恰好取在区间[1,2]上为事件A,求事件A的概率?学生刚刚学习了古典概型,该问题是想借此引出几何概型的概念.我们知道,古典概型和几何概型的相同点是基本事件空间中每个基本事件发生的可能性大小相同;不同点是古典概型的基本事件空间中只 An accident In the introduction of the lesson “Geometry”, I designed the problem of taking a real number in the interval [0,6] and setting it to take exactly the interval [1,2] for the event A, find the probability of event A? Students just learned the classical pattern, the problem is to draw the concept of geometric patterns .We know that the classical pattern and geometric pattern of the same point is the basic event space for each basic The probability of occurrence of the same size; the difference is that the basic profile of the classical event space only