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体育课不仅是掌握体育知识、技能、发展身体和增强体质的手段,同时也是培养学生思维能力,扩大知识范围,提高学习效率的过程,因此作为一名中学体育教师在讲述体育动作要领时,应该注意与学生在中学物理所学过的力学知识相结合,这样不但能够提高学生上体育课的兴趣,而且还可以适用学生已学的知识,进行引导性讲解,使学生听得懂,动作掌握得快。 1.杠杆原理的运用 物理上有杠杆,人体内也有杠杆。在肌肉拉力的作用下能够围绕关节转动的骨叫骨杠杆。凡是杠杆必须具备支点、力点、阻力点、力臂和阻力臂。在人体
Physical education is not only a means of mastering sports knowledge and skills, developing body and strengthening physique, but also a process of cultivating students’ ability of thinking, expanding knowledge and improving learning efficiency. Therefore, as a middle school PE teacher, Attention should be paid to the combination of mechanical knowledge learned by students in middle school physics so that students’ interests in physical education can be enhanced. In addition, they can also apply the knowledge that students have learned and conduct introductory explanations so that students can understand and master the action fast. 1. Leverage the use of physical leverage, the human body also has leverage. A bone that turns around the joint under the muscle tension is called a bone lever. All leverage must have the fulcrum, strength, resistance, strength and resistance arm. In the human body