This handbook was developed to suggest an approach for language development in the elementary school that uses existing curricula and the child's experiences to help students develop the language skills necessary for success in school and society. After an introductory chapter on the theories of language learning and teaching, the guide provides: (1) sample units in language and content subject areas; (2) a discussion of multiculturalism and its application in the classroom; (3) a discussion of language assessment for teachers; (4) information for administrators on assessment and placement of limited English proficiency children; and (5) a collection of additional language development activities. The section on sample units covers the major portion of the guide. The units demonstrate how to choose an appropriate context for activities, the linguistic content, and meaningful activities. The sample units are story-telling at the primary level and a science unit at the intermediate level. In this section, as well as in the remainder of the guide where appropriate, numerous activities are described, many worksheets suitable for reproduction are provided, and learning and testing activities are described in detail. A list of resources concludes the volume. (AMH)