In this paper, we proposed a new science education program, SAM (Science Art
Mathematics), for the student with developmental disabilities. SAM is the modified STEAM
program, which focuses on functional curriculums of science, art, and mathematics. To
investigate an effect of SAM, we applied SAM to five developmentally disabled students and
explored its affects on them, in totally twenty activities, five time a week. Three, two special
and a science, teachers participated in our program, and they analysed the result in three ways:
participant observation, interview, and documentary survey. Experimental result shows that
three basic functions, observation, measurement, and classification, of the students were
improved after every activity. In addition, the students' attitudes on scientifical study was also
improved. It means SAM can be also used to the effective tool for performance evaluation of
teachers. However, the program gave no effect on estimation and inference.