数学探究对学生而言是一种学习方式,对教师而言既是一种教学理念,也是一种教学方式,如何把这一教学理念落实到具体的课堂教学之中是每个教师不得不思考的问题.下面结合我们在教学“离散型随机变量的期望”(人教版普通高中数学第三册选修Ⅱ)中的一些具体做法与思考谈点体会,以期 Mathematics exploration is a learning method for students. It is not only a teaching concept but also a teaching method for teachers. How to implement this teaching concept into specific classroom teaching is something that every teacher has to think about. Question. The following discussion is based on some of the specific practices and reflections of our teaching “Expectations of Discrete Random Variables” (Pedagogy, General High School Mathematics, Book 3, Selection II).