练习是课堂教学的重要组成部分。新授课练习的内容应考虑到知识前后的联系,设计要遵循学生学习过程的基本规律,由浅入深,由易到难,循序渐进,做到练有层次。新授课的练习,一般可按照如下四个层次推进。 Practice is an important part of classroom teaching. The contents of the new lectures should take into account the knowledge before and after the link, the design should follow the basic rules of the student learning process, from light to dark, from easy to difficult, step by step, to practice a level. The new teaching practice, generally follow the following four levels.