Now the demand for skilled labor is urgent. Development of skilled labor has been done in various ways either through education and training. Indonesia, especially North Sumatra state nurture some vocational schools that produce graduates which are expected to be ready for working, but have not been able to meet these expectations. Therefore we face how to build a learning that is intended to establish effectively the competence of Vocational Middle School students. In this study, we propose an interactive multimedia-based learning model in teaching engineering mechanic competence. The results of empirical data showed significant evidence supports our proposition. It explores an important issue in developing the learning model of student competence in the field of engineering mechanic.