解三角形是高中数学中很基础却又很重要的知识,主要考查正弦定理和余弦定理的正确运用,属于历年考试必考的题目。但从考试结果分析,这部分得分并不理想。根据“错误”是一种可再生教学资源的教学理念,首先,教师要正视学生的错误,引导学生发现错误。发现错误之时,就是开始降低出错率的最佳时机;其次,教师要引导学生主动去纠正错误,找出错误的根源;再次,教师要培养学生及时反思,对错误分类整理,落实纠错并进行针对练习。下面搜集整理了学生三个 Solving triangles is a very basic but important knowledge in high school mathematics. It mainly examines the correct application of sine and cosine theorems, and it is a topic that must be examined in the examinations of previous years. However, from the examination result analysis, this part of the score is not ideal. According to “error” is a teaching philosophy of renewable teaching resources, first of all, teachers should face the mistakes of students and guide students to find errors. Finding the wrong time is the best time to start reducing the error rate. Second, teachers should guide students to correct mistakes and find out the root causes of mistakes. Third, teachers should train students to reflect in time, sort out errors, and implement corrective actions. Conduct exercises. The following is a collection of three students