在教学中,我们时常遇到这样的情况:学生忘记带学习用具了,学生在课堂上不能集中精力听课,学生没有养成复习和预习的好习惯,学生该做的作业没有完成,合作学习的课堂变成“自由市场”……面对这样的情况,虽然每位老师都会有不同的解决方法与策略,但在实践中却是路相殊 In teaching, we often encounter such a situation: students forget to bring learning tools, students in the classroom can not concentrate on listening to the class, the students did not develop a good habit of review and preview, students do the homework is not completed, cooperative learning The classroom becomes “free market ” ... In the face of such a situation, although each teacher will have different solutions and strategies, but in practice it is the difference