1. Development of turn and turn measurement concepts in a computer-based instructional unit

   • Douglas H. Clements
   • Michael T. Battista
   • Sudha Swaminathan

   OriginalPaper Pages: 313 - 337

2. The role of schemes in designing computerized environments

   • Sara Hershkovitz
   • Pearla Nesher

   OriginalPaper Pages: 339 - 366

3. Apprentissage dans un environnement informatique: possibilité nature transfert des acquis

   • Antoine Dagher

   OriginalPaper Pages: 367 - 398

4. The mental manipulation of 2-D representations of knots as deformable structures

   • Heather McLeay
   • David Piggins

   OriginalPaper Pages: 399 - 414

5. Call for papers

   Announcement Pages: 415 - 415