三角化简求值是高中数学复习中重要的内容之一,教师在复习这部分知识时,往往只侧重于技巧与方法的讲授,加之这部分内容知识点多且方法灵活,成为很多学生的绊脚石.为了更好地提高复习的有效性,我们可从“对象间的关联、算理、表征能力”三方 Triangular reduction is one of the most important contents in high school mathematics review. When reviewing this part of the knowledge, teachers tend to focus on the teaching of skills and methods. In addition, this part of knowledge is more knowledgeable and flexible and has become a stumbling block for many students In order to better improve the validity of the review, we can learn from the three aspects of the “association, arithmetic and characterization of objects”