In 1980, the International Environmental Education Program of UNESCO published Strategies for Developing an Environmental Education Curriculum, to be used as a working document for a series of regional workshops. This publication is a revision of the 1980 document and is intended to provide an update for curriculum developers in environmental education. Patterns and trends in the field of environmental education are discussed, particularly with regard to curriculum development. A major portion of the document, entitled Environmental Education Curriculum and Materials Development, contains sections on: (1) guidelines for designing an environmental education curriculum format; (2) criteria for decision making in environmental curriculum development; (3) benefits derived from using the goals for curriculum development; (4) an instructional model which applies the goals; (5) procedural guidelines and considerations for curriculum development; (6) the preparation of teachers in environmental education; (7) the implementation of environmental education curricula; and (8) comprehensive environmental education curriculum evaluation. The appendices include sample activities based on the stated curriculum development goals and a nine-page bilbiography. (TW)