1. Towards methodologies for building Knowledge-Based Instructional Systems

   • Philippe Duchastel

   Forum Pages: 349 - 358

2. Improving error diagnosis using intermediate representations

   • Michael Twidale

   Article Pages: 359 - 387

3. Supporting hypothesis generation by learners exploring an interactive computer simulation

   • Wouter R. van Joolingen
   • Ton De Jong

   Article Pages: 389 - 404

4. The sequence of conceptual information in instruction and its effect on retention

   • Frederik J. A. Ranzijn

   Article Pages: 405 - 418

5. The acquisition of wisdom in engineering design

   • A. E. Samuel
   • J. G. Weir

   Article Pages: 419 - 442

6. The effects of technical illustrations on cognitive load

   • Kenneth N. Purnell
   • Robert T. Solman
   • John Sweller

   Article Pages: 443 - 462

7. Abstracts of articles

   Cumulative Index & Abridged Abstract, Volumes 16–20 Pages: 463 - 479

8. Book reviews

   Cumulative Index & Abridged Abstract, Volumes 16–20 Pages: 480 - 480

9. Index by contributor & topic

   Cumulative Index & Abridged Abstract, Volumes 16–20 Pages: 481 - 483