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一、教材理解1.教材简析。统计中的《平均数》是三年级下册第十单元第1课时的教学内容。主要任务是了解平均数的产生和意义,学会计算简单数据的平均数。正确理解、计算、运用平均数,是继续学习统计知识的重要基础,也是发展统计观念的基本要求。苏教版教材在小学阶段的每个学期都安排有《统计》的内容,这节课就是在学生已有了一定的收集和整理数据能力的基础上进行教学的。平均数在传统教材中是当成典型应用题来呈现的,属于解决问题教学范畴,新教
First, textbook comprehension 1. Textbook analysis. The “average” in the statistics is the teaching content at the first lesson of the tenth unit of the third grade. The main task is to understand the generation and meaning of the average, learn to calculate the average number of simple data. Correct understanding, calculation and application of the average number are the important basis for continuing to learn statistical knowledge and are also the basic requirements for the development of statistical concepts. The textbooks of the Supian textbooks are arranged with “statistics” in each semester of the elementary school. This lesson is based on the students’ certain ability to collect and organize data. The average number in the traditional textbooks is presented as a typical application problem, which belongs to the problem-solving teaching, Protestant