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在概率教学过程中,大部分老师都有一个感受,就是学生总弄不清一次试验中什么是基本事件,或者是基本事件应该有哪些.究其原因是我们在概率的概念教学中忽视了一个重要的问题,即“基本事件的形成过程”.或者说我们没有引导学生弄清楚基本事件形成的因素.而这一问题是影响学生今后学习和解决概率问题是否正确的关键.我们先看人教A版数学必修3《古典概型》一节内容中的例3:
In the process of probabilistic teaching, most teachers have a feeling that students always can not figure out what a basic event or basic event should be in a test. The reason is that we have neglected one in the concept teaching of probability The important question is “the formation process of basic events”, or we do not guide the students to understand the formation of basic events, which is the key to influence students’ probability of learning and solving probabilities in the future. People teach A version of math compulsory 3 “classical profile” section of the content of Example 3: