普通高中数学课程标准(实验)中指出:数学课堂教学应倡导自主探索、动手实践、合作交流、阅读自学等学习方式.这些方式有助于发挥学生学习的主动性,使学生的学习过程成为在老师引导下的“再创造”过程.要把新课程的这一基本理念落实到课堂教学中,需要教师在课前潜心研究教学的着力点,在课堂上关注学生的学习心理需求和情感体验.笔者曾听过同行的一节点到直线距离的公开课,感受颇多,现将其整理成文,旨在与 In the standard of high school mathematics curriculum (experiment), it is pointed out that mathematics classroom teaching should advocate self-exploration, hands-on practice, cooperation and exchange, reading self-study etc. These ways help to give play to the initiative of students to make the learning process of students Teachers under the guidance of the “re-creation” process.To implement this basic idea of ​​the new curriculum into the classroom teaching, teachers need to concentrate on the focus of teaching before the class, pay attention to students’ psychological needs and emotions in the classroom Experience. I have heard peer peer to straight-line distance from the open class, feel a lot, and now organize their writing, with the aim of