数学教学的核心任务是培养学生的数学思维能力,对学生来说,良好的思维习惯将根本性影响到他对数学问题的认识,也有利于促进数学思维能力的发展。当然,数学能力的提高主要体现在解题的质量和丰富的解题体验上。不少学生常常是问题解完后就认为任务完成了,不愿意再去想一想自己的解题过程是否有错,如有错,问题出在哪儿等,因而经常把会做的题目做错。因此养成解题后回首检查的习惯显得尤为重要,它不仅可以使我们避免一些不必要的错误, The core task of mathematics teaching is to cultivate students’ mathematical thinking ability. For students, good habits of thinking will fundamentally affect his understanding of mathematical problems, but also help to promote the development of mathematical thinking ability. Of course, the improvement of mathematical ability is mainly reflected in the quality of problem-solving and rich problem-solving experience. Many students often think that after the completion of the task is completed, do not want to go to think about their own problem-solving process is wrong, if wrong, where the problem lies, etc., and often do the subject of doing wrong . Therefore, it is particularly important to develop the habit of looking back after examining problems and not only can we avoid some unnecessary mistakes,