The purpose of this study is to examine whether Tag Rugby, which is one of the “Territorial Games”, is easier compared to Port Ball with a view point of personal skills. To achieve this, a comparative study of the three actions as personal skills was made in Tag Rugby and Port Ball. These actions are “The action to score” and “The action to move with the ball”, factors that make Tag Rugby easy, and “The action to pass the ball” a factor that makes Tag Rugby difficult. Therefore, the awareness of pupils and the phenomenon of play according to each action have been compared. The following points became clear from the investigation.
1) “The action to score” in Tag Rugby is easier than that of Port Ball for the pupils.
2) “The action to pass the ball” in Tag Rugby is easier than that of Port Ball for the pupils.
3) It can be said that “The action to move with the ball” in Tag Rugby is easier than Port Ball for the pupils from the investigation of the pupils' awareness. However, the examination is insufficient because the investigation of the phenomenon was not executed.
Consequently, in Tag Rugby not only the factors which were said to be easy, but also the difficult factor, came out easier compared to the factors of Port Ball. There is a possibility that there would be a gap between the awareness of pupils and the phenomenon of play in the ball games. In order to choose meaningful ball games for the pupils in the school PE curriculum, it seems that the teachers will be required to make note of the pupils' views, through examining the phenomenon, and not only the awareness of pupils towards specific kinds of ball games.

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The purpose of this study was to develop the questionnaire to investigate students' naive concept on overhand pass skill in volley ball and to clarify its characteristics. To investigate it, based on expert discussion and description on overhand pass skill of master students, the questionnaire with two parts was developed. One part is that of estimating degree of importance of movement and another is that of finding problems of skills in still figure.
As the subject,166 students in 1^st grade junior high school students in the same school were asked to answer it. As the result,140 answers were analyzed. These students were divided into three types.14 were belonging to volley ball club,85 have learned soft volleyball in PE class in elementary schools and 41 have not experienced it. The main findings were summarized as followings:
1) Students' naive concepts on overhand pass skill could be extracted through the questionnaire.
2) Using the first part of the questionnaire, common knowledge between these three types' students could be extracted. For example, importance of straining fingers and pulling up a ball on the forehead was hard to recognize.
3) The form of the hand and the pulling up a ball on the forehead in still figures' questions were too difficult to recognize.
In this study, numbers of subject was so limited and also each number of three types of students was different. Therefore, to make it more reliable, numbers of subject should be added.
The method of teaching the skill in the class could cause little change in such knowledge. Usually, for transforming children's naive concept to ‘academic content’, some kind of a didactical devise should be necessary. Based on this suggestion, developing instructional strategy and verification of its effectiveness remain as the further thsks.

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