在体育活动中,“跳大绳”是同学们喜欢的活动项目之一。活动中往往需要两人共同用力甩大绳,消耗体力较大,时间一长,手就会感到酸痛,所以常常会出现甩绳难的问题。将人工甩绳方式改为机器甩绳,有助于解决甩绳问题,调动同学们跳绳的积极性,参与活动的同学还可以由原来的最少三人? In sports activities, “jumping rope” is one of the favorite activities of the students. Activities often require two people to throw a big rope together, and consume a lot of physical strength, over time, the hands will feel sore, so it is often difficult to throw the rope. Changing the manual rope rejection method to the machine rejection rope helps solve the problem of rope rejection and mobilize the enthusiasm of the students in skipping. The students participating in the activity can also have at least three original students.