案例回顾:60米迎面接力赛,同年级各班进行男女混合比赛,每班平均分为两队,并分别站在跑道两端,每个学生只能参与一次。比赛结束,完成任务用时最少的班级获胜。在比赛过程中,有一个班级一直处于第二的位置,比赛结束时,该班起点的最后一名学生却早早地冲过了终点线,但比赛的接力棒却没有在他 Case Study: The 60-meter head-on relay race was held in the same year with mixed classes for men and women. The average class was divided into two teams and each stood at two ends of the runway. Each student could only participate once. The game is over, the task of completing the task with the least class wins. In the course of the game, there is a class has been in the second position, the end of the game, the class starting point of the last student crossed the finish line early, but the game’s baton was not in his