数学习题是巩固新知、形成技能、训练思维的有效手段。但是在我们的教学实践中存在着这样一种倾向:重视对例题的研究而忽视对习题的分析。很多教师往往只着眼于习题的正确率而忽视了习题的教学,甚至仅仅把教材的习题作为课后作业布 Mathematical exercises to consolidate new knowledge, the formation of skills, training and effective means of thinking. However, there is such a tendency in our teaching practice that attention should be paid to the study of the examples instead of the analysis of the exercises. Many teachers tend to focus only on the correctness of exercises and neglect the exercise of teaching, or even just the textbook exercises as homework cloth