The National Diffusion Network (NDN) is a federally funded system that makes exemplary educational programs available for use by schools, colleges, and other institutions. This publication contains information describing the science education programs currently in the NDN, along with procedural information on how to access these programs. The current NDN science education programs described in this document are: (1) "Conservation for Children"; (2) "Foundational Approaches in Science Teaching (FAST)"; (3) "Geology Is"; (4) "Hands-On Elementary Science"; (5) "Informal Science Study"; (6) "Life Lab Science Program"; (7) "Marine Science Project: for SEA"; (8) "Physics--Teach to Learn Program"; (9) "Sci-Math"; (10) "Starwalk"; (11) "Stones and Bones, a Laboratory Approach to the Study of Biology, Modern Science, and Anthropology"; and (12) "ZOO: Zoo Opportunities Outreach." Each program description is accompanied by a listing of the intended audience, the services available, the requirements of the program, and the name and address of the program's contact person. Included is a list of the state NDN facilitators. (TW)