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教学内容:苏教版数学三年级(下册)92-94教学目标:1.学生在具体的情境中,感受平均数是解决一些实际问题的需要,体会平均数的意义,学会计算简单数据的平均数。(结果是整数)2.运用平均数的知识解释简单的生活现象,能解决简单的实际问题。3.操作、交流的过程中,建立学习数学的信心,发展统计观念。教学重点:理解平均数的意义,学会求简单数据的平均数。教学难点:理解平均数的意义。教学准备:课件、学具板。课前准备:课前谈话。
Teaching content: The Sujiao version of the third grade of mathematics (volume) 92-94 teaching objectives: 1. Students in a specific situation, the average number of feelings is to solve some practical problems need to understand the meaning of the average, learn to calculate simple data Average. (The result is an integer) 2. Use simple average knowledge to explain simple life phenomena and solve simple, practical problems. 3 operation, the exchange process, the establishment of confidence in learning mathematics, the development of statistical concepts. Teaching Focus: Understand the meaning of the average, learn to find the average of simple data. Difficulties in teaching: Understand the meanings of the mean. Teaching preparation: courseware, school board. Pre-class preparation: talk before class.