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一、问题的提出“折线统计图”是沪教版《数学》四年级下册第三单元的教学内容,引导学生在掌握条形统计图的基础上继续学习有关统计图的知识。通常,教师会根据教材的编排顺序,先让学生认识折线统计图,了解折线统计图的特点;然后学习如何画折线统计图;最后比较条形统计图与折线统计图的异同点,通过练习让学生明确什么时候用条形统计图来表示,什么时候用折线统计图来表示。
First, the question raised “line chart ” is the Shanghai Pupil “Mathematics” fourth grade third volume of the teaching content, and guide students to master the bar chart based on the continued learning of statistical knowledge. Normally, the teacher will make the students know the broken line chart according to the order of the teaching materials, and then understand the characteristics of the broken line chart; then learn how to draw the line chart; finally compare the similarities and differences between the bar chart and the line chart, Students know when to use bar charts to indicate when to use line charts to express.