笔者参加过不少公开课、观摩课 ,发现相当一部分课堂中的合作仅仅停留在形式上。往往是教师一宣布小组合作交流 ,前排学生唰地回头 ,满教室都是嗡嗡的声音 ,四人小组里 ,每个人都在张嘴 ,谁也听不清谁在说什么。几分钟后 ,教师一喊“停” ,学生立即安静下来。站起来发言的学生? I participated in many open classes, observing classes, found that a considerable part of the cooperation in the classroom only stay in the form. Often the teacher announces the team's cooperation and exchange. The front row students turn around and the classroom is full of buzzing voices. Everyone in the four-member group is opening his mouth and nobody knows what is being said. A few minutes later, the teacher shouted “stop”, the students immediately quiet. Stand up to speak students?