“复式折线统计图”是北师大版小学数学六年级上册的教学内容,此前,学生已学习了单式折线统计图和复式条形统计图,对折线统计图的特点和作用已有所了解。基于学生对统计图已有认知的考虑,老师们往往将培养学生的读图能力视为本课教学重点,即引导学生从复式折线统计图中获取有价值的信息解决相关问题,常用的教学方法为:先出示复式折线统计图,引导学生进行观察和数据分析,再回答相关问题,体会复式折线统计图的特点。这种教学过程重在 “Compound Polyline Chart ” is the sixth grade of Beijing Normal University version of elementary school teaching content, after the students have learned single-line statistics and double-line bar chart statistic, the characteristics and role of the line graph has been Understand. Based on the students ’cognition to the chart, teachers often regard the students’ reading ability as the focus of this course, which is to guide the students to obtain valuable information from the complex line chart to solve the related problems. The common teaching The method is as follows: First, show the compound polyline chart, guide students to observe and data analysis, and then answer the relevant questions, understand the characteristics of double polyline chart. This teaching process is important