一节数学课,有效的练习是数学课的重要组成部分,是学生学习中必不可少的环节,是学生掌握知识、培养能力的必然途径。通过练习,能及时反馈教师的教学效果、学生的学习效果,使学生的知识得到巩固和深化,提高课堂教学的质量。那么练习的设计得当与否,显得尤为重要。因此,教学中,对练习的内容、形式、数量等要进行周密的考虑,使练习真正起到既巩固所学的知识,又能发展学生思维能力的作用,同时每一堂课我们老 A math class, an effective exercise is an important part of math class, is an essential part of student learning, is the necessary way for students to acquire knowledge and develop their abilities. Through practice, teachers can be timely feedback on the teaching effectiveness of student learning results, so that students consolidate and deepen the knowledge to improve the quality of classroom teaching. Then the exercise of the design properly or not, it is particularly important. Therefore, in teaching, the content, form, quantity, etc. of the exercise should be carefully considered so that the practice can really play the role of consolidating the knowledge learned and developing the thinking ability of the students. At the same time,