Some fundamental characteristics and trends of the approach to teaching employed in functional literacy projects for adults are described, and avenues for study and research are suggested. The Experimental World Literacy Programme educational activities show two major methodological trends: an "ecological" trend and an "industrial" trend. The purpose of functional literacy is to develop in a socioeconomic context not only the technical and vocational skills of individuals but also their mental powers of analysis and their ability to communicate. A course that allows for diversification in respect to (1) programs and methods, (2) teaching materials, and (3) teacher recruitment is needed. The aim of a study of the environment is to ensure that the programs and their content shall be well suited to its needs and problems. The teaching strategy involves devising teaching programs, preparing teaching materials, and training the teachers. An indispensable methodological prerequisite is that responsibility for functional literacy programs be assumed at the beginning by the socioeconomic authorities and institutions (technical ministries, industrial and agricultural undertakings, trade unions, etc.) of the environment concerned. (DB)