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一、落地位移大原因分析:小学生腿部肌肉力量相对薄弱,双腿在快速依次交换过程中身体重心控制不稳,造成双脚落点位置不固定。纠正方法:利用短绳围成绳圈进行“定位”限制(见图1),要求学生在练习中做到双腿快速高抬,两脚依次落于设定好的“绳圈”内,使学生在练习中体验到原地高抬腿动作中“原地”二字的真正含义。在学生练习一段时间后,根据学生掌握的情况,适时将“绳圈”缩小,这样做的目的是逐步控制学生原地高抬腿落地脚的移动,避免了练习时学生之间身体
First, the large displacement of the ground Cause analysis: the pupil’s leg muscle strength is relatively weak, the legs in the rapid sequence of exchange of body center of gravity control instability, resulting in the location of both feet is not fixed. Remedy: The use of short rope surrounded by rope into the “positioning” limit (see Figure 1), require students to exercise in the legs quickly lift high, feet fall in turn set a good “rope ring ”, So that students in practice to experience the movement of the place where the leg up “ place ”the true meaning of the word. After the students practiced for a period of time, according to the students to grasp the situation, timely “rope ring” narrowed, the purpose of doing so is to gradually control the movement of students lying on the ground legs, to avoid the physical body between students