Instructional aids produced from these transparency masters and the accompanying narrative may be used by vocational agriculture teachers in presenting courses in plant science. They were developed by subject matter specialists and teacher educators as part of a project designed to test effects of involving vocational agriculture teachers in development and experimental use of instructional materials. Included with the transparencies are introductory material on the project, the method of research, and the results, as well as recommended uses of the masters and teaching suggestions. The transparencies are grouped under five subject areas: (1) General Plant Morphology and Structure, (2) Cereal Crops, (3) Legumes, (4) Grasses, and (5) Weed Identification. Samples of letters and questionnaires used in the research are appended. (AW)