This study aims to improve teaching methodology of teaching elementary school students a group dance for sports days through examining the actual case of teaching group dance in J elementary school. The whole process of preparation for the group dance for the sports day was described to help people understand what the sports day is, and then the preparation and actual teaching steps were examined. The conclusion is as follows. The sports day of J elementary school was almost same as those of other schools. There were usually team competitions, individual competitions, group dance, games for parents, and celebration events in the sports days. After the preparation stage the headmaster and the deputy were changed and the number of classes was decreased, so the preparation time and the sports day events were shrunk than originally they were. According to the sports day plan, teachers were supposed to teach students a group dance for seventeen days and then the students had to practice for four days on the school ground which would be the actual stage of their performance. There were various kinds of dances such as Recreation Dance, Folk Dance, and Cheer Dance. The teachers consulted EBS, Physical Education curriculum, and other teachers\' methodologies. The practice was divided into two stages. On the first stage students watched visual material and learned segments of the dance and music in the class room, and then they practiced whole series of dance on the school ground.