The Instructional Model Development Based on Interactive Multimedia on Technical Mechanics Competence of Vocational High School Students of North Sumatera Province

This research is aimed to: (1) find interactive multimedia based instructional model, (2) examine the effectiveness of interactive multimedia based instructional model. This study is developmental research uses Borg and Gall model. The first design model of development of this instructional product is designed programmatically and student centered learning with the processed in five steps: i.e. instructional design, developing preliminary instructional model, validating, trying out, and revising of preliminary instructional model. The subject of preliminary field testing are three experts in technical mechanical material, one experts in instructional design, four students for one to one try out, twelve students for small group try out and twenty five students for classroom group try out. The instrument employed in this study is a questionnaire and analyzed by using descriptive statistics. The study to the students of class XI semester 4 academic year 2012-2013 take place in SMK Negeri 2 Balige to examine the effectiveness of interactive multimedia based instructional model. The method used in this study with compare pre test and post test student learning outcomes. The first design of this interactive multimedia based instructional model is effective with continues improvement. The finding of study are: (1) the quality of instructional model viewed from the expert in educational technologies is good (75.00%), (2) in the one to one try out of the three student observation indicated that the product is good (75.46%), (3) in the small group try out of twelve students observations indicated that the product is good (87.04%), (4) and in the classroom group try out of twenty five students observations indicated that the product is good (mean pretest = 31.39; mean posttest = 32.54).