随着素质教育的不断深入,体育教学在课程教学中的分量越来越大。然而有关调查显示,近年来,青少年参与体育锻炼的时间相对较少。尽管我们的生活水平提高了,但学生的体质并没有得到明显的改善,尤其是肥胖率不断攀升。因此,在初中体育教学中适当开展拓展性活动,是非常必要的。拓展性活动是指教师根据教材的特点,抓住教材某一信息点,向教材以外某个方面或某几个方面扩展延伸, With the continuous deepening of quality education, PE teaching has become more and more important in the course teaching. However, the survey shows that in recent years, young people participate in physical activity for a relatively short period of time. Although our standard of living has risen, there has not been a marked improvement in our students’ physical fitness, especially the obesity rate. Therefore, in junior high school physical education appropriate to expand activities, it is very necessary. Outreach activities refer to the teachers according to the characteristics of teaching materials, grasp the textbook of a certain information point, to one or several aspects outside the textbook to extend and extend,