【练习一】一清二楚忆优点1.板书课题《折线统计图单元练习》,明确学习内容。2.回顾单式折线统计图。(1)课件出示两条信息。A.张亮语文连续五个单元的成绩。B.张亮五门不同学科的期末成绩。师:看完两条信息,你能提出什么问题?生:这两条信息分别适合用什么统计图来表示?师:这个问题怎么回答?师:假如你就是张亮,你希望自己语文连续五个单元的成绩是怎样的?把自己理想中的语文连续五个单元的成绩画成折线统计图。(2)学生在一张空白统计图上操作。 [Exercise] clear one advantage of a clear 1. Board topic “broken line chart unit practice”, a clear learning content. 2. Review the single line chart. (1) courseware to produce two pieces of information. A. Zhang Liang language success of five units. B. Liang Zhang five different disciplines of the final grade. Teacher: After reading the two pieces of information, what problems can you ask? Student: What are the two pieces of information for each chart? Teacher: How to answer this question? Teacher: If you are Zhang Liang, you want your own language for five consecutive years What is the grade of a unit? Draw the result of five consecutive units of the ideal Chinese as a line graph. (2) Students operate on a blank chart.