“锐角三角函数”在初中几何部分占有重要的地位,相关题目的综合性较强,新授课后的章节复习课教学重点不仅在于让学生对锐角三角函数的基本概念有一个清晰的理解,并做到熟练运用,更重要的在于能灵活地解决一些较为复杂的图形问题,这就对学生的观察能力、迁移能力、创造性能力等提出了更高的要求。笔者在教学中尝试采用以题引领的方式既对本章的重点知识进行复习,同时又结合本章内容让 “Acute trigonometric function ” occupies an important position in the geometric part of junior high school, the relevant topics are comprehensive, the focus of the new lesson after the review section teaching is not only to enable students to have a clear understanding of the basic concepts of acute trigonometric functions, And make proficient use, more importantly, the flexibility to solve some of the more complex graphics problems, which on the students’ ability to observe, transfer ability, creative ability put forward higher requirements. In the teaching of the author, I try to use the method of taking the title to lead the review of the key knowledge of this chapter, at the same time, combining the contents of this chapter