最近我参与了一节比赛课的备课,教学内容是苏教国标版教材三年级(下册)统计的第一课时《平均数》,在帮助赛课教师磨课的过程中引发了一点思考。这部分内容是小学生第一次接触平均数的概念。对于这样的概念学习,学生一般会依据自我的直接经验,从所呈现的大量具体例子出发,通过自我体悟和归 Recently, I participated in a lesson preparation lesson, the teaching content is the third grade (second volume) statistics of the Soviet Union national standard version of the “average” the first lesson in helping the class teacher in the process of grinding aroused a little thought. This part of the content is the concept of pupils’ first-time average exposure. For such a conceptual learning, students usually based on self-direct experience, starting from a large number of specific examples presented by self-understanding and return