This document is composed of edited speeches from a meeting of directors of National Science Foundation (NSF) projects, NSF staff, and other selected invitees convened by the Division of Science Education Development and Research (SEDR). An introduction by Walter L. Gillespie, a copy of the three-day agenda, and 16 addresses are included. The titles and presenters of some of these addresses are "Integrated Research, Development, Dissemination and Practice in Science Education," Ralph W. Tyler with reactions by Robert Karplus and Ronald G. Havelock; "The Role of the National Diffusion Network in Spreading Educational Innovations," Lee E. Wickline; "The Interpretation of Research and Development in Science Education," Rustum Roy; "Projects that Integrate Science Education Research and Development: Benefits of Interactions and Costs of Missed Opportunities," Mary Budd Rowe; "What Science/Math Education Researchers Say to the Development Community," Diane McGuinnes; "New Horizons in Educational Development," Jack Lochhead; "Current Targets of Opportunity - What Science/Math Education Developers Say to the Research Community," Howard D. Mehlinger; "Education in Science and Technology for All Americans," Izaak Wirsrup; and "Relating Research and Development in Education," Susan F. Chipman. (PEB)