George E. Andrews Mathematics Education: Reform or Renewal? Michèle Artigue De la Comprehension des Processus d'Apprentissage a la Conception de Processus d'Enseignement Maria G. Bartolini Bussi Drawing Instruments: Theories and Practices from History to Didactics Miguel de Guzmán, Bernard R. Hodgson, Aline Robert and Vinicio Villani Difficulties in the Passage from Secondary to Tertiary Education D. J. Lewis Mathematics Instruction in the Twenty-first Century Mogens Niss Aspects of the Nature and State of Research in Mathematics Education David A. Smith Renewal in Collegiate Mathematics Education