1. Advice to Prospective Authors

   • Editorial Notes

   EditorialNotes Pages: 1 - 2

2. An Onto-Semiotic Analysis of Combinatorial Problems and the Solving Processes by University Students

   • Juan D. Godino
   • Carmen Batanero
   • Rafael Roa

   OriginalPaper Pages: 3 - 36

3. Students' Early Mathematical Representation Knowledge: The Effects of Emphasizing Single or Multiple Perspectives of the Rational Number Domain in Problem Solving

   • Bryan Moseley

   OriginalPaper Pages: 37 - 69

4. Introducing the Concept of Convergence of a Sequence in Secondary School

   • Malgorzata Przenioslo

   OriginalPaper Pages: 71 - 93

5. The Interplay of Teacher and Student Actions in the Teaching and Learning of Geometric Proof

   • Tami S. Martin
   • Sharon M. Soucy McCrone
   • Jaguthsing Dindyal

   OriginalPaper Pages: 95 - 124

6. ICMI Study 16: Challenging Mathematics in and Beyond the Classroom: Discussion Document

   • Edward J. Barbeau
   • Peter J. Taylor

   OriginalPaper Pages: 125 - 139