Rory McGreal is Associate Vice President Research at Athabasca University, Canada.

• Part 1: Learning Objects and Metadata 1. Learning Objects: Resources for Learning Worldwide S. Downes 2. A First Step Towards a Theory of Learning Objects M. Sosteric and S. Hesemeier 3. Modeling Units of Learning from a Pedagogical Perspective R. Koper & R. van Es 4. Some Objections to Learning Objects N. Friesen 5. Learning Objects Revisited E. Duval and W. Hodgins Part 2: Creating Learning Objects 6. Designing Effective Learning Objects M. Ally 7. Creating Learning Objects S. Downes 8. Signs and Objects: Modeling Learning Objects on Peirce's Theory of Signs P. Polsani 9. Transforming Existing Content into Resable Learning Objects M. Doorten, B Giesbers, J. Janssen, J. Daniels & R. Koper 10. The Language of Flexible Reuse: Reuse, Portability and Interoperability of Learning Objects Or Why Learning Design P. Sloep 11. Collaborative Evaluation of Learning Objects J. Nesbit, K. Belfer Part 3: Contextualization of Learning Objects 12. Context and the Role of Standards in Increasing the Value Of Learning Objects R. Robson 13. Context and Metadata for Learning, Education and Training J. Mason 14. Contextualised Models and Metadata for Learning Repositories H. Allert, C. Richter, H. Dhraief and W. Nejdl 15. Moving Further in E-Learning Standardization: Towards a Reference Architecture L. Anido 16. Reusable Learning Resources: Building a Metadata Management System Supporting Interoperable Learning Object Repositories D. Sampson and P. Karampiperis Part 4: Learning Object Profiles, Applications and Models 17. CanCore: Guidelines for Learning Object Metadata N. Friesen, S. Hesemeier and A. Roberts 18. The Evolution of Learning Object Repository Technologies: Portals for On-Line Objects for Learning G. Richards, M. Hatala and R. McGreal 19. The Edutella P2P Network: Supporting Democratic E-Learning and Communities of Practice M. Nilsson 20. The Explor@2 Learning Object Manager G. Paquette, A. Miara, L. Guerette and K. Lundgren-Cayrol 21. The MERLOT Model and the Scholarship of Teaching N. Kestner Part 5: The Semantic Web, Intelligent Agents and the Future 22. The Semantic Web and Metadata Decentralization S. Palmer 23. Beyond Educational Objects to Education Modeling Languages T. Anderson and A. Petrinjak 24. Semantic Cobblestones: An Interoperability Mechanism for Learning Object Repositories G. Richards and M. Hatala 25. Knowledge Modeling for Developing Course Design Agents F. Lin 26. Educational Modeling Languages, from an Instructional Engineering Perspective G. Paquette