教学是双边互动的活动,教师在按照自身对教材与学生的理解上设计教学过程。课堂练习环节的设计,主要出于及时消化巩固新知、培养学生数学思维、及时反馈课堂教学效果以调整教学方向为目的。了解到课堂练习的作用,设计有利于学生发展的课堂练习,无疑对老师提出更高的要求。 Teaching is a bilateral interactive activity. Teachers design teaching process in accordance with their own understanding of teaching materials and students. The design of classroom practice is mainly for the purpose of timely digesting and consolidating new knowledge, cultivating students’ mathematical thinking and timely feedbacking classroom teaching effects so as to adjust teaching direction. Understand the role of classroom practice, the design of classroom exercises conducive to the development of students, no doubt put forward higher requirements for teachers.