学生做作业或考试的目的是什么?无非是再理解和巩固知识点、学以致用、培养各种能力、反馈教学效果,所以学生做适量作业或考试很有必要。但学生在做作业或考试中会出现不会和错误,错题纠正也是教学过程中不可或缺的环节。传统的做法是老师批改以后,挑选学生错得较多的几道题目,上课集中讲解。但老师真要挑出几题来也并非易事,往往 What is the purpose of the students to do homework or exam? Is nothing more than to understand and consolidate knowledge points, apply what they have learned, develop a variety of abilities, feedback teaching effectiveness, so students do some homework or examinations is necessary. However, students do their homework or exams will not be wrong and error correction is also an integral part of the teaching process. The traditional approach is the teacher after the correction, the selection of more wrong students a few questions, focus on class. However, it is not always easy for teachers to pick out a few questions