This sourcebook contains articles, resources, and sample teaching materials to assist practitioners implementing developmentally appropriate practices in the classroom. The first six parts of the sourcebook contain reprints of more than 40 journal articles, topical bibliographies and resource lists, and sample teaching materials. The topics of these first six parts are: (1) early childhood and developmental education; (2) educational reform; (3) learning styles and needs; (4) multiage practices; (5) integrated language arts; and (6) assessment. Part 7 contains a variety of resources, including a bibliography of whole language professional books containing over 280 items; a 79-item bibliography on poetry; and lists of publications and special interest groups, materials suppliers, videos, book publishers, children's magazines, and sources of songs and stories. (TJQ)