The background of this research that only 18% of 1.6 million students with special needs have received educational services. The learning conditions tend to be conventional, the limitations of learning media and teacher competence. The purpose of this study was to describe the process of light service motorcycle and the change of behavior dimension for students with mental retardation. Mental retardation means subaverage intellectual ability equivalent to or less than an IQ of 70 that is accompanied by significant deficits in abilities (as in communication or self-care) necessary for independent daily functioning, is usually present from birth or infancy, and is manifested especially by delayed or abnormal development, by learning difficulties, and by problems in social. Participants of this study were students with light mental retardation in special schools. This research method is a single subject research method. The research design used reversal design of type A-B-A, where baseline phase (A1) measurement was done three times, then intervention phase (B) was done four times. Then done baseline phase (A2) done three times. The results of research on the implementation of demonstration methods learning, showed an increase in behavioral dimensions, especially for aspects of latency in skill of light service motorcycle.
Mental Retardation, Behavior Dimension, Single Subject Research