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教学内容人教版《数学》九年级上册第136、137页“随机事件”(第1课时)。点评:从《数学课程标准》看,本章属于“统计与概率”领域,一方面,统计与概率相对独立,另一方面概率又以统计为依托。本章的主要内容是随机事件的定义,概率的定义,计算简单事件概率的方法,利用频率估算概率;中心内容是体会随机观念和概率思想。本节课通过设置实际问题(事件),让学生感受到:在
Teaching content PEP “Mathematics” ninth grade on the first 136,137 pages “random events ” (the first class time). Comments: From the “mathematical curriculum standards”, this chapter belongs to the field of “statistics and probability”, on the one hand, the statistics and the probability is relatively independent, on the other hand, the probability is based on the statistics again. The main contents of this chapter are the definition of random events, the definition of probability, the method of calculating the probability of simple events, and the probability of using frequency to estimate the probability. The content of the center is to understand random thoughts and probability thoughts. This lesson lets students feel by setting actual problems (events): at