现在的小学数学教师系统学习过概率论知识的可能并不多,而要引导学生领会事件发生的随机性、事件发生结果的必然性、大量随机现象中的统计规律性,教师就必须补上这些知识。只有这样,教师才能在明晰概念的前提下帮助学生领会可能性,及时发现并纠正学生片面、肤浅的认识,避免出现越讲学生越糊涂的现象。 Nowadays, primary school mathematics teachers may not have much probability knowledge of probabilistic theory. However, teachers must guide students to understand the randomness of events, the inevitability of event occurrence and the statistical regularity of a large number of random phenomena. Teachers must make up this knowledge . Only in this way, teachers can help students understand the possibility under the premise of a clear concept, timely identify and correct one-sided, superficial understanding of students, to avoid the more students more confused phenomenon.