This sourcebook presents an approach to teaching students of English as a Second Language (ESL) that integrates communicative competence, cognitive and academic language development, and content instruction. It is intended for use by elementary school teachers of ESL and regular classroom teachers whose classes contain ESL students. An introductory chapter outlines the origins of the approach in language learning theory, cognitive and humanistic psychology, and educational principles, and describes the educational model in question. The second chapter discusses the application of the model to the selection and use of instructional materials, and the third chapter addresses lesson and unit planning. Three subsequent chapters present the following units: (1) an advanced unit on planets and space; (2) an intermediate unit on animals and their habitats; and (3) a primary unit on foods that grow. Each unit contains 8-12 lessons that target one or more content area, including language arts. The final chapter offers practical suggestions for integrating ESL students into the regular classroom, including such techniques as classroom organization, silent periods, classroom communication, treatment of errors, reading difficulties, and adaptation of instruction. (MSE)