新课标实施以来,统计与概率纳入了小学数学课程。人教版义务教育课程标准实验教科书《数学》从一年级下册至六年级下册,都安排了统计与概率的内容。其中统计内容居多,涉及概率的有三年级上册、五年级上册、六年级下册。笔者认为,在领悟概率概念的基础上认清随机事件本质,是提高概率教学实效的前提。 Since the implementation of the new curriculum standards, statistics and probabilities have been included in the elementary mathematics curriculum. PEP curriculum standard experimental textbook “Mathematics” from the first grade to the sixth grade under the book, are arranged statistics and probability content. Among the majority of statistical content, involving the probability of the third grade on the volume, the fifth grade on the sixth grade, the next volume. The author believes that recognizing the nature of random events on the basis of comprehending the concept of probability is a prerequisite to improve the effectiveness of probability teaching.