The purpose of this study was to find and to apply an effective intervention method to deal with the
aggressive behaviors of Junseo, who is in a classroom for two-year olds. First, we collected the data
about the aggressive behaviors by ABC event sampling, journal, recording the frequency of
behaviors and the interview with the parents. Second, we drew an inference to the reason for his
behaviors and tried to find an appropriate method to deal with them with colleagues and the
professor. A time-out was applied to Junseo's aggressive behaviors and alternately, his parents were
asked to applause him frequently on appropriate behaviors at home. The aggressive behaviors
became better gradually while the intervention method was monitored and assessed for feedback. As
a result, the approach procedure, which was used in this study, was suggested to deal with the
aggressive behaviors of young children. And supporting the system for operating this procedure was
further discussed