This monograph, one of four in a series, contains material on a particular aspect of literacy training. Developed from reports, papers, and case studies from the Regional Literacy Workshop (November 29-December 20, 1979) held in Udaipur, India, the monographs are suggested for use in training programs for literacy personnel as background materials, an exercise in materials production, or a course of lectures. This monograph focuses on developing instructional materials for an adult literacy program. The need for instructional materials, the need for their development, and the types of material needed are discussed. Concepts and principles that must be incorporated into the materials developed are then addressed. These include national policy, learners' individual needs, individualization of materials and teaching, and the choice of language variety. The process of developing instructional materials is considered in terms of agencies to be involved, need analysis, setting up objectives, organization of the materials, draft formulation, materials testing, teachers' guides, and workbooks. Evaluation, followup, and research of the materials are also discussed. Sample instructional materials are appended. (YLB)