This yearbook is a collection of writings focusing technology-based innovations and illustrating exemplary projects that use technology to improve education. Following the introduction by Chris Dede, the book is divided into five parts as follows: Part 1, "Education in the 21st Century: One Vision "Connecting with the 21st Century: Technology in Support of Educational Reform" (Robert Kozma and Patricia Shank). Part 2, "Empowering Learning Communities: "Scaffolded Technology Tools to Promote Teaching and Learning in Science" (Joseph Krajcik, Elliot Soloway, Phyllis Blumenfeld, and Ronald Marx); "Technological Support for Project-Based Learning" (Mark Guzdial); "Assistive Technology for Young Children in Special Education" (Michael M. Behrmann); Part 3, "Extending Learning Communities": "Technology and Learning in Schools for thought Classrooms" (Susan M. Williams, Katherine L. Burgess, Melinda H. Bray, John D. Bransford, Susan R. Goldman, and the Cognition and Technology Group at Vanderbilt (CTGV); "Union City Online: An Architecture for Networking and Reform" (Margaret Honey, Fred Carrigg, and Jan Hawkins). Part 4, Education in the 21st Century: Another Vision: "Integrating Internet Services into School Communities" (Eileen M. Lento, D. Kevin O'Neill, and Louis M. Gomez); "Teaching and Learning in the Educational Communities of the Future" (Margaret Riel. Part 5, "Implementing Educational Technology 'Tomorrow Morning.'""The Scaling-Up Process for Technology-Based Educational Innovations" (Chris Dede). Contains author and editor biographies with addresses and a list of the board of directors. (AEF)