Through the use of comprehensive instructional design and sophisticated information technologies, the University of Michigan School of Education has reinvented the way it educates prospective mathematics teachers. A new World Wide Web-based instructional environment called SLATE (Space for Learning and Teaching Exploration) combines digital video, searchable transcripts, basic multimedia authoring, and other new media applications to provide a shared experiential frame and a range of investigation previously unavailable to student teachers. This paper discusses the technical design of the SLATE environment, budget and staffing, summary of outcomes, and future developments. Five figures illustrate features of the technology, and a table charts staffing hours used on the SLATE project. (Author/AEF)