This document contains the following full and short papers on knowledge construction and navigation from ICCE/ICCAI 2000 (International Conference on Computers in Education/International Conference on Computer-Assisted Instruction): (1) "An XML-Based Tool for Building and Using Conceptual Maps in Education and Training Environments" (Juan-Diego Zapata-Rivera, Jim E. Greer, and John Cooke); (2) "CedarLearning: The Development of Learning-Centred Environments" (Tanya Wilson, Jeanette Muzio; Roger Mundell, Denise Stockley, and Laureen Vickery); (3) "Controlling Problem Progression in Adaptive Testing" (Roger E. Cooley and Sophiana Chua Abdullah); (4) "Cooperative Monitoring System Using Mobile Agent" (Young-Gi Kim, Sun-Gwan Han, and Jae-Bok Park); (5) "Development and Evaluation of a Mental Model Forming Support ITS--The Qualitative Diagnosis Simulator for the SCS Operation Activity" (Toru Miwata, Tatsunori Matsui, Toshio Okamoto, and Alexandra Cristea); (6) "Domain Specific Information Clearinghouses--A Resource Sharing Framework for Learners" (Wong Pei Yuen, Yeo Gee Kin, David Crookall, and Lua Tse Min); (7) "The Gathering and Filtering Agent of Education Newspaper for NIE" (Chul-Hwan Lee, Sun-Gwan Han, and Gee-Seop Han); (8) "Learners' Structural Knowledge and Perceived Disorientation in a Hypermedia Environment: The Effects of Information Conveying Approaches and Cognitive Styles" (Jim Jiunde Lee); (9) "Learning Protocols for Knowledge Discovery: A Collaborative Data Mining Approach to Creative Science Education" (Feng-Hsu Wang); (10) "Navigation Script for the World Wide Web" (Sachio Hirokawa; Kengo Nishino; and Daisuke Nagano); (11) "Proposal of an XML-Based Knowledge Sharing and Management System Supporting Research Activities" (Kyoko Umeda, Takami Yasuda, and Shigeki Yokoi); (12) "Scientific Revolutions and Conceptual Change in Students: Results of a Microgenetic Process Study" (Benson M. H. Soong and Yam San Chee); (13) "The 'Half-Life' of Knowledge in the University of the 21st Century" (Roger Mundell, Denise Stockley, Jeanette Muzio, Tanya Wilson, and Laureen Vickery); (14) "The Artistic Interface--A Transition from Perception to Screen" (Peter D. Duffy); (15) "The Discussion on the Dynamic Knowledge Generation and the Learning Potential Ability" (Chao-Fu Hong, Chiu-e Chen, Ming-Hua Hsieh, Cheng-Kai Huang, and Shih-Hsiung Chang); (16) "A Distance Ecological Model To Support Self/Collaborative-Learning via Internet" (Toshio Okamoto); (17) "The Internet-Based Educational Resources of the U.S. Federal Government" (Andy Wang and Krishelle Leong-Grotz); and (18) "The Network Learning Supported by Constructivism" (Song-Min Ku). (MES)