随机变量概念引入的教学探讨

分析引入随机变量概念的步骤和随机变量概念产生的意义,提出从以下四个方面来引入和支持随机变量概念的学习：一是用数来表示事件;二是对比表示事件的两种方法,显示数量表示方法的优越性;三是随机变量概念的提出使概率研究从个别概率问题计算拓展为随机变量的分布规律研究;四是随机变量概念的提出使分析工具得以运用.

Teaching Exploration out of the Concept of Random Variables

This paper analyzes the introduction steps and significance of the concept of random variables, and proposes how to introduce and support the learning of the concept of random variable from the following four aspects ： a. use numbers to represent events; b. display the superiority of approach of using numbers to represent events through comparing two approaches that represents the events; c. the bringing forward of concept of random variables expands the study of the probability from individual probability problem calculation to the exploration of random variables distribution rule; d. the bringing forward of concept of random variables makes the analysis tools used.