一、教材浅析九年义务教育小学数学教材关于统计初步知识的内容，在通用教材的基础上增加了一些常用的、学生又能接受的知识。主要内容是：简单统计图表的初步知识；平均数的意义及其求法；数据的收集与分类整理；简单的统计表；根据收集的数据求稍复杂的平均数；条形、折线和? First, the textbook analysis Nine years of compulsory education in primary school mathematics textbooks on the content of preliminary statistics, in the common textbook based on the increase of some commonly used, students can accept the knowledge. The main contents are: the initial knowledge of simple statistical charts; meanings and their meanings; the collection and classification of data; the simple statistical tables; the slightly complicated averages based on the collected data;