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课题:北师大新版初中数学七年级下册第六章《概率初步》第2节第2课时“概率”.理解教材:在前面学习中,学生通过表述他们生活经历和知识经验中形形色色的不确定事件,加上“掷骰子”、“转盘”、“摸球”等试验操作,能够体验到事件发生的可能性是有大小的.在此基础上,他们还需要更确定的刻画,想知道事件发生的可能性究竟多大.学生对新知识的渴求引发了新的认知冲突,学习的内部动因由来
Subject: Beijing Normal University new version of junior high school mathematics seventh grade volume sixth chapter “Probability Preliminary” section second day 2 “Probability.” Understand the textbook: In the previous study, students through their life experiences and knowledge of all kinds of color Of uncertain events, coupled with trial operations such as “roll dice”, “turntable”, “touch ball” and so on, to experience the possibility of event occurrence being of a size. On this basis, they also The need for a more definitive portrayal of the likelihood of an event occurring is how much the student’s desire for new knowledge triggers a new cognitive conflict and the internal motivation for learning