On the knowledge based society is demanding for competent subjects who can create new knowledge and apply it as well as possess self-directed learning abilities. Even when it comes to instructing underachievers, changes in the systematic education program is being required. Underachievers show difference in learning ability with other students as their grade level increases and this leads to a decline in understanding about what is learned during class. Accordingly, this results in the loss of the desire to learn and is causing underachievement to become more serious. In this paper, arithmetic section was selected amongst all the other sections in an elementary mathematics textbook. In order to minimize the learning deficit of underachievers, recomposition was made with contents and stages appropriate for the instruction of underachievers to develop a self-directed learning model and implement the Scratch game program. As a result of applying the program of this study on underachievers who are in third grade of elementary school, it was analyzed that their competence of arithmetic operation was enhanced and that it also increased their level of interest about learning.

본 논문은 교실친화적 교원을 양성하기 위한 방법의 일환으로 사례기반 교수법을 소개한다. 구체적으로 사례기반 교수법과 관련된 문헌 분석을 토대로, 확장된 의미로서의 사례기반 교수법이 무엇인지 살펴보고, 초등수학교육에서 사례기반 교수법을 어떻게 개발할 수 있는지 전반적인 방법과 핵심적인 구성 요소들을 분석한 후, 구체적인 개발의 예를 제시한다. 또한 사례기반 교수법의 활용 방안 및 초등 교사의 수학과 전문성 신장 측면에서의 기대 효과 등을 논의한다.