정량적 분석의 한계점을 보완하기 위해, 전체 실험집단을 대상으로 면담을 실시하였으며, 면담은 수업 종료 후에 이루어졌다.
In order to supplement the limitations of quantitative analysis, interviews were conducted for the entire experimental group, and interviews were conducted after the class was over.