头上前掷实心球的远度主要由两大因素决定,即投掷者身体后倾的角度和投掷者的腰腹以及上肢力量。在这两个因素中,身体后倾的角度可以通过短时间辅导予以纠正、提高。而投掷者的腰腹以及上肢力量则需要通过一定时间的锻炼才能获得提高。因此,笔者认为,应把改善投掷者身体后倾角度作为首要教学因素。面对“怎样才能获得尽可能长的用力工作距离”和“怎样发挥腰腹以及上肢力量”的问题,笔者在教学中采用行之有效的直观教学法进行教学,通过两种“直观教学法”的演示,改善教学环境和方式,促进学生 Throwing the solid ball forward on the head is determined mainly by two factors, namely, the angle of the thrower’s body and the waist and thigh of the thrower, and the strength of the upper arm. In these two factors, the body backward angle can be corrected by short counseling, improve. And the thigh waist and upper limb strength need to be through a period of exercise can be improved. Therefore, I think, should improve the throwing body tilt angle as the primary teaching factor. In the face of “how to get as long as possible hard working distance” and “how to play waist and upper limb strength” problem, the author uses effective visual teaching method to teach in teaching through two kinds of “Intuitive pedagogy” presentation, improving teaching environment and ways to promote students