《中学数学教学大纲》指出:“练习是数学教学的有机组成部分,对于学生掌握基础知识和基本技能,培养能力是必不可少的.”在日常教学中,充分发挥课堂练习的作用,加强解题技巧方面的指导,及时将课本知识加以深化和拓宽,是切实提高课堂教学质量的重要途径.可是,有的教师把课堂练习单纯理解为教学中的一个环节,认为它只起着熟练与巩固的作用,于是 The “Middle School Mathematics Syllabus” pointed out: “Exercise is an integral part of mathematics teaching. It is essential for students to master the basic knowledge and basic skills and cultivate their abilities.” In everyday teaching, the role of classroom exercises is brought into full play. Strengthening guidance on problem-solving techniques and deepening and broadening textbook knowledge in a timely manner are important ways to effectively improve the quality of classroom teaching. However, some teachers simply understand classroom practice as a part of teaching and believe that it only plays a proficient role. With the role of consolidation, so