This study aims to understand what the students have observed about the motor skill of hip circle backward in the "Teaching Method of Primary Physical Education 2" of Hiroshima University. The results are summarized as follows. 1. Students observed different parts of movement about the same movie of hip circle backward in the case of second observation on compared the first observation. 2. When students observed good performance compared with unskillful performance of hip circle backward, students watched other parts of movement than the case of students' observation about the movie of skillful performance of hip circle backward. 3. When students found out problems about unskillful performance based on comparing good performance with unskillful performance, there were three cases. Firstly students could find problems about some movements if lectures explained about them. Secondly students couldn't find problems about some movements if lectures explained about them. Thirdly students could find problems about some movements without lectures' explanation.