This is the third in a series of three tests of selected micro-teaching and video recording feedback techniques in laboratory settings designed to stimulate vocational teacher education programs. A comparison was made of the relative effectiveness of: (1) face-to-face supervision with video feedback, (2) remote supervision via video feedback which included a second sound track with the teacher educator's comments, and (3) remote supervision via video feedback augmented by instructional models for self-comparison. Three feedback groups, each consisting of four vocational teachers, practiced demonstrating a manipulative skill during seven 5-minute teaching sessions. Their lessons were evaluated by a panel of two judges using a critique form on demonstrating a manipulative skill. An analysis of the mean performance scores revealed no significant differences in effectiveness among the techniques, but it did reveal a significant change in the teachers' performance. It was concluded that the three feedback techniques were feasible methods for programs of vocational teacher education. (Author/GEB)