This guide provides assistance in selecting and designing the day care center's building and grounds and in planning and arranging the center's playroom. In regard to the building and grounds, discussion considers program and support service functions, highly desirable features of buildings and grounds, playroom space, outdoor space, and principles for designing the playyard. Discussion concerning the playroom focuses on the activity center, equipment and materials, criteria for choosing play equipment and materials, and a playroom equipment list specifying basic and optional items for activity centers devoted to art, blocks, dramatic play/house play, library/language/books, manipulative/constructive/quiet play, music/movement, sand, science/pet, water play, and woodworking/carpentry activities. In conclusion, a reference list cites general references on space, equipment, and materials; outdoor play space/the playyard; equipment and materials for play; audio-visual materials; and organizations and agencies considered useful to those involved in day care program planning activities. (RH)