在基层学校,由于铅球场地的不固定性,给体育教师带来了诸多不便,画铅球场地也成了体育教师的家常便饭。笔者在多年的铅球教学、训练中梳理出以下三种画铅球场地的方法。根据实际情况需要,可以任其选择一种方法,有的操作、运用起来既方便又快捷,既省时又省力。(说明:以40。角的扇形落地区为例,国际田联现用34.92°)一、通用常规画法1.确定中心点O为圆心,以1.0675米为半径,画出铅球投掷圈。2.确定投掷方向,画出通过圆心与投掷方向垂 In grassroots schools, due to the instability of the shot field, physical education teachers have brought a lot of inconvenience, draw the shot field has become a commonplace of physical education teachers. The author in many years of shot put teaching, training out the following three kinds of painting the ball court approach. According to the actual situation needs, you can let it choose a method, some operations, the use of both convenient and fast, both time-saving and labor-saving. (Note: The angle of 40. Fan-shaped area, for example, the IAAF is now 34.92 °) First, the conventional method of drawing 1. To determine the center O as the center, with a radius of 1.0675 meters, draw shot put ring. 2. Determine the direction of throwing, draw the direction of throwing through the center of the circle