1. On some psychological aspects of mathematics achievement assessment and classroom interaction

   • Jenz Holger Lorenz

   OriginalPaper Pages: 1 - 19

2. L'Observation de classes et le paradoxe de l'observateur

   • Josette Adda

   OriginalPaper Pages: 21 - 32

3. The understanding of numeration in primary school

   • Nadine Bednarz
   • Bernadette Janvier

   OriginalPaper Pages: 33 - 57

4. Appropriation des proprietes ordinales du nombre par l'eleve du cours preparatoire

   • A. Bessot
   • C. Comiti

   OriginalPaper Pages: 59 - 88

5. The mathematical vitality of secondary mathematics graduates and prospective teachers: A comparative study

   • P. L. Galbraith

   OriginalPaper Pages: 89 - 112

6. Book review

   • Erich Wittmann

   BookReview Pages: 113 - 116

7. Announcement

   Announcement Pages: 117 - 118