1. The Felix Klein Medal for 2009 goes to Gilah C. Leder, La Trobe University, Bundoora, Victoria, Australia

   • Michèle Artigue

   Announcement 30 April 2010 Pages: S1 - S2

2. ICMI study 21 Mathematics education and language diversity

   • Michèle Artigue

   Announcement 30 April 2010 Pages: S3 - S6

3. The Hans Freudenthal Medal for 2009 goes to Yves Chevallard, IUFM d’Aix-Marseille, France

   • Michèle Artigue

   Announcement 05 May 2010 Pages: S7 - S8

4. Letter to the Editor

   • Tevfik İşleyen

   Letter 19 January 2011 Pages: S9 - S9

5. Reply to the Letter to the Editor

   • Norma Presmeg

   EditorialNotes 01 March 2011 Pages: S10 - S10