高中数学知识可以分为两部分,其中一部分是受高考应试重视的核心知识,诸如函数最值、三大性质、向量数量积、立体几何的角和距离等;另一部分知识往往不太显山露水,但是却默默为核心知识提供着保障,诸如集合论中的知识、利用空间向量解决立体几何问题中的坐标系选择合理与否、三角函数线等,这些知识却又无法缺失,笔者将其称之为边缘知识.从教学的实际情形来看,教师往往对于核心知识存在着反复讲、重点讲、天天讲,但是对于那些服务于核心 The knowledge of high school mathematics can be divided into two parts, some of which are the core knowledge that is taken into account by the college entrance examination, such as the function’s maximum value, the three major properties, the vector quantity product, the angle and distance of the three-dimensional geometry, etc.; the other part of the knowledge is often not very dew. However, it silently provides protection for core knowledge, such as knowledge in set theory, use of space vectors to solve the problem of reasonable coordinate system selection in trigonometric geometry problems, and trigonometric function lines. However, these knowledge cannot be lost. The edge of knowledge. From the actual situation of teaching, teachers often have core knowledge for the repeated stresses, focus on speaking, and speaking every day, but for those who serve the core