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简述铅球运动的发展，及其背向滑步推铅球技术的优越性。运用教学实验、文献分析和比较等方法，对侧向与背向用步推铅球技术的教学进行比较和分析，得出如下结论和建议：１．认为不适应于铅球运动发展的技术动作该淘汰的让其淘汰（如侧向推铅球技术）；２．在体育教学中，普遍认为技术性较先进，发展相对稳定（如背向推铅球技术），最好尽量采用；３．体育教学应该随着体育科学的发展的趋势相一致；４．反映在《大纲》、《教材》上的一些观点要明确，方向要一致，从实际出发，根据需要进行教学。
A brief account of the development of shot put and the superiority of its backward sliding shot put technique. By means of teaching experiment, literature analysis and comparison, the paper compares and analyzes the lateral and backward teaching of step-up shot-put technique, and draws the following conclusions and suggestions: 1. The technical actions which are considered unsuitable for the development of shot put should be eliminated (such as the side-shot putting technique); In PE teaching, it is generally considered that the technology is more advanced and the development is relatively stable (eg, the technology of throwing shot put), it is best to use it as much as possible. Physical education should be consistent with the development trend of sports science; 4. Some opinions reflected in “Outline” and “Textbook” should be clear and consistent in direction, proceed from reality and be taught as needed.