继各科新课程标准颁布以后，随着教学思想的转变，教学理念的更新，自主探究、合作交流成为课堂教学的重要方式。如何把学生各自的经历、体验汇集成知识的板块，把学生的各自认识过程形成科学的方法策略，把学生各自的情感、体会上升为价值观？这就需要教师在合作交流中灵活地 Following the promulgation of new curriculum standards for various subjects, with the change of teaching ideology, the renewal of teaching philosophy, independent inquiry, and cooperation and exchange have become important methods of classroom teaching. How to integrate the students’ experiences and experiences into a knowledge section, form a scientific method and strategy for each student’s understanding process, and raise the students’ individual emotions and experiences to values? This requires teachers to be flexible in cooperation and communication