A perspective on teaching the trainable mentally retarded is presented along with an approach to evaluating commercial materials with an accompanying outline for evaluation and an illustration of its use. A selected bibliography includes 41 professional references, 65 readings for professional growth, 30 curriculum guides, 16 references on language development, and 19 language development materials. Also cited are 21 references on perceptual training, 31 references on numbers and materials, 11 references on reading and materials, and nine references on other areas of the curriculum. Listed are the following: six sources of free and inexpensive materials; 26 teacher designed activities and aids (with illustrations and descriptions); and arithmetic supplies and games, language arts supplies and games, and perceptual and muscular coordination materials. (DF)