1. Three determinants of difficulty in verbal arithmetic problems

   • Pearla Nesher

   OriginalPaper Pages: 369 - 388

2. Enquiry, discovery and research: Terminology and meaning

   • Menahem Finegold
   • Shmuel Avital

   OriginalPaper Pages: 389 - 397

3. Mathematical induction in the classroom

   • Shmuel Avital
   • Rodney T. Hansen

   OriginalPaper Pages: 399 - 411

4. The naive concept of definition in mathematics

   • Shlomo Vinner

   OriginalPaper Pages: 413 - 429

5. The place of geometry in mathematics teaching: An analysis of recent developments

   • H. J. Vollrath

   OriginalPaper Pages: 431 - 442

6. La géométrie projective à l'école

   • Emma Castelnuovo
   • Daniela
   • Claudio Gori-Giorgi

   OriginalPaper Pages: 443 - 463

7. Balancierte graphen-ein thema für die didaktische diskussion zum geometrieunterricht

   • G. Walther

   OriginalPaper Pages: 465 - 495

8. Approche des statistiques en classe de sixième: Analyse de résultats sportifs

   • Claude Comiti
   • Marie-Rose Guillermard
   • Alain Solano

   OriginalPaper Pages: 497 - 521

9. A commentary from iea on Dr. Freudenthal's article in: Educational studies in mathematics, vol. 6, no. 2

   • G. F. Peaker

   OriginalPaper Pages: 523 - 527

10. Rejoinder

    • H. Freudenthal

    Legacy Pages: 529 - 533

11. Erratum

    Erratum Pages: 535 - 535