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教学目的:1.初步建立平均数的基本思想(即统计的初步思想),理解平均数的概念。2.掌握求平均数的解题规律:总数量÷总份数=平均数,培养学生的思维能力。教学重点:让学生理解并掌握求平均数的方法。教学难点:理解平均数的概念。教学过程:一、复习准备口答:1.小华4天读完80页书,平均每天读几页?2.一个上下同样粗的杯子里装有16厘米
Teaching purposes: 1. Preliminary establishment of the basic idea of the average (that is, the initial idea of statistics), understand the concept of averages. 2. Grasp the law of solving the average number of questions: the total number ÷ total number of copies = average, train students’ thinking ability. Teaching focus: to enable students to understand and grasp the method of averaging. Difficulties in teaching: Understand the concept of averages. Teaching process: First, the preparation for the reply A: 1 Xiaohua 4 days to read 80 pages of books, read an average of several pages per day 2 a thick cup up and down with 16 cm