众数的认识是在学生已经认识了平均数、中位数的基础上展开教学的。平均数、中位数和众数是三种常用的统计量,通过本课的教学要让学生理解众数的意义以及感受学习众数的价值,体会三种统计量的联系和区别,会根据实际情况的需要来选择合适的统计量表示数据的不同特征。基于以上思考,我做了如下教学设计。一、从认知需要出发,引出众数教学1、与学生交流并把四位学生的年龄写在黑板上,最后写上老师自己的年龄。2、求出本组数据的平均数,并通过四位学生的年龄与平均数比较,引导学生发现在这组数据中,由于出现一个特别大的数,导 Recognition of the mode of publicity is based on the average number of students have been met, the median based on the teaching. The average, median and mode are the three commonly used statistics, through the teaching of this lesson let students understand the meaning of mode and feel the value of mode of learning, to understand the relationship between the three statistics and differences will be based on The actual situation needs to select the appropriate statistics to represent the different characteristics of the data. Based on the above thinking, I made the following instructional design. First, from the cognitive needs, leading to the public teaching 1, to communicate with students and write the age of four students on the blackboard, and finally write the teacher’s own age. 2, find the average number of data in this group, and by comparing the age of four students and the average, to guide students to find in this group of data, due to the emergence of a particularly large number, guide