This collection of seven short articles discusses the role of naturalistic observation in program evaluation. There are criteria that evaluators explicitly or implicitly use to reach conclusions. These papers discuss these criteria and try to determine what constitutes legitimate evaluation knowledge. (RB)

An ethnographic approach with added quantitative and qualitative data collection and analysis was used to study the extent and nature of technology-based materials in 15 elementary school mathematics classrooms. The blend of methods provided rich and varied information and gave insights either type of analysis could not provide alone. (SLD)