一要树立安全观，课前先把措施想；二要仔细查器械，清除“坏箱”与“坏羊”；三要穿着合体装，拖拖挂挂受影响；四要跳前多活动，易伤部位早预防；五要规定动作法，多做示范亮稳像；六要练习有层次，循序渐进慢进展；七要严肃纪律性，有序原理是妙方；八要保护与帮助，预防学? First, we must establish a safety concept, the first measures before class; Second, we must carefully check the equipment, remove the “bad box” and “bad sheep”; three to wear the fit, drag the trailer linked to the impact; Vulnerable parts of the early prevention; five to the provisions of the action method, to do more demonstration calm image; six to practice a level, step by step slow progress; seven to be serious discipline, orderly principle is a recipe; eight protection and help, prevention ?