在传统的体育教学中，虽然学生也是以班级这样的群体模式进行体育知识、技能的学习，但是在课堂教学过程中，学生仍以单独练习为主，彼此之间缺乏必要的沟通。在战术配合教学或是进行教学比赛时，学生是以小组的模式进行学习和活动，可是学习小组是由教师或学生自己随机的组 In traditional PE teaching, although students also learn sports knowledge and skills in a group mode of class, the students are still mainly practicing alone in the classroom teaching, and they lack the necessary communication with each other. In tactical teaching or teaching competitions, students learn and act in a group mode, but the learning group is composed of teachers or students themselves in a random group