一、从近年教材的变化谈起谈到目前一些省市正在使用的普通高中课程标准试验教科书(人民教育出版社编著A版)教学选修2-3,就不能不谈一下近年高中教学教材的变化.从一九九七年始,天津市、山西省、江西省(即两省一市)使用人民教育出版社编著的高中教学新教材.新教材将概率内容编入第十章——排列、组合和概率,它是在学习排列组合的基础上学习随机事 First, from the recent changes in teaching materials Talking about the current high school curriculum standards standardized test textbooks (People’s Education Publishing House edited version A) teaching elective 2-3, can not but talk about changes in recent years, high school teaching materials Since 1997, Tianjin, Shanxi and Jiangxi provinces (ie, two provinces and one city) have used the new high school teaching materials edited by the People’s Education Press. The new textbook has compiled the probability content into the tenth chapter - arrangement and combination. And probability, it is to learn random things on the basis of learning arrangement and combination