Because of limited access to technical systems used to train men to maintain complex electronic equipment, an instructional format employing low-cost slides and photos was used to provide students with simulated experiences. Five experimental instructional blocks were developed and tested in two classrooms. Results were compared with two control classes, and the experimental groups showed superior mastery of the skills contained in the five instructional blocks. This report describes the background of the project, the research design, and the analysis of the data. (EMH)