Abstract
This study is a case study of applying the successive approximation to a certain child who refused to participate in the whole school chorus in an elementary school. And this is a report to consider the effect of the technique. In the successive approximation, 13 levels of lower goal behavior were set and implemented. The final goal was to move to the stage by himself without being prompted by the teacher, and to stand in the correct position and sing loudly. As a result, the child gradually felt more confident by achieving each lower goal sequentially, and was able to adapt to the whole school chorus scene. This report shows that the intervention used in this study was an effective means to achieve the action target. In addition, the reason why the successive approximation was effective in this study was that (1) it was properly performed depending on the actual condition of the child, and (2) the teacher was involved in the child with a counseling mind. This study suggested that the successive approximation may be effective for other children who cannot participate in school events in the educational setting.