团身前滚翻是各级各类学校体操基本教材之一,也是向前滚翻类的“先导”动作,其“先导”作用在于能否掌握前滚翻的正确技术。团身前滚翻的动作规格是:“蹬地前滚时有直腿过程,滚动要圆滑。”它依次以手、头后部、背、腰、臀着地,以二脚蹬地所获得的支撑反作用力为动力来完成向前滚翻。过早或过迟的屈膝团身都有碍于该动作的完成。在实际教学过程中,采用“当背部着地时,屈膝团身(如图1②-⑤)的动作要领,为时过早。因此,学生往往易产生三种不良结果。一是过早的屈膝团身,不利于两脚完成充分的蹬地动作;二是过 Rolling forward before the group is one of the basic teaching materials of all kinds of school gymnastics at all levels, is also a “pilot” action rolling the class, its “pilot” is the ability to grasp the correct technology before rolling. Rolling forward before the group action specifications are: “when there is a straight leg forward rolling process, rolling to be smooth.” It followed by hand, head and back, back, waist, buttocks, with two feet to get the support Reaction force as the power to complete the roll forward. Premature or late knee flexion body hinder the completion of the action. In the actual teaching process, it is too early to adopt the method of "flexing your knees (as shown in Figure 1 (2) - (5)) when you are back in. Therefore, students tend to have three unfavorable results. Body, is not conducive to foot full foot pedal action; second is too