几何概型是高中数学新课程的新增加内容之一,是在古典概型基础上进一步的发展,是等可能事件的概念从有限到无限的延伸.但中学一线教师大都没有系统地学习过几何概型的相关理论与知识,致使在新教材的教学过程中,只能是边学边教,“摸着石头过河”,形成了一些认知上的“疑点”.本 The geometric pattern is one of the new additions to the new high school mathematics curriculum, which is based on the classical pattern. It is a limited to unlimited extension of the concept of possible events, but most teachers in the middle schools do not systematically study geometry The related theory and knowledge of the genre lead to the fact that in the teaching process of the new teaching material, we can only learn from one side and teach and “feel the stones across the river”, thus forming some cognitive “doubtful points.”