Tabla de Contenidos: “….] -- Research methods in (mathematics) education / Alan Schoenfeld -- On the purpose of mathematics education research : making productive contributions to policy and practice / Frank Lester, Jr. and Dylan Wiliam -- Funding mathematics education research : three challenges, one continuum, and a metaphor / Eric Hamilton, Anthony Eamonn Kelly, and Finbarr Sloane -- Time(s) in the didactics of mathematics : a methodological challenge / Ferdinando Arzarello, Maria Bartolini Bussi, and Ornella Robutti -- The problematic relationship between theory and practice / Nicolina Malara and Rosetta Zan -- Linking researching with teaching : towards synergy of scholarly and craft knowledge / Kenneth Ruthven -- Linking research and curriculum development / Douglas Clements -- Historical conceptual developments and the teaching of mathematics : from philogenesis to ontogenesis theory to classroom practice / Fulvia Furinghetti and Luis Radford -- Mathematics curriculum development for computerized environments : a designer-researcher-teacher-learner activity / Rina Hershkowitz ... …”