1. A calculus-with-computer experiment

   • David A. Smith

   OriginalPaper Pages: 1 - 11

2. Les six étapes de l'apprentissage des structures

   • Z. P. Diénès

   OriginalPaper Pages: 12 - 42

3. Une expérience dans un lycée classique

   • Lina Mancini Proia

   OriginalPaper Pages: 43 - 62

4. Some notes on multiplication of whole numbers

   • Thomas C. O'Brien

   OriginalPaper Pages: 63 - 67

5. Study of geometry in the fourth grade

   • A. D. Semušin

   OriginalPaper Pages: 68 - 83

6. A geometry on the cube

   • Maurice Glaymann

   OriginalPaper Pages: 84 - 94

7. An investigation of structure in elementary school mathematics: Isomorphism

   • William E. Lamon
   • Lloyd F. Scott

   OriginalPaper Pages: 95 - 110

8. Combinatorial analysis and school mathematics

   • J. N. Kapur

   OriginalPaper Pages: 111 - 127

9. XIth International Olympiad Bucharest, 5–20 July 1969

   Announcement Pages: 128 - 129