What kind of results can be rationally justified in didactics? / Josep Gascónand Pedro Nicolás
Research on ATD outside mathematics / Caroline Ladage, Marianne Achiam and Martha Marandino
Praxeologies to be taught and praxeologies for teaching : a delicate frontier / Michèle Artaud
Developments and functionalities in the praxeological model / Hamid Chaachoua, Annie Bessot, Avenilde Romo and Corine Castela
Research on negative numbers in school algebra / Eva Cid, José M. Muñoz and Noemí Ruiz-Munzón
The potential of reference epistemological models : the case of elementary differential calculus / Catarina Lucas, Cecilio Fonseca, Josep Gascón and Maggy Schneider
The Second Spanish Republic and the project method : a view from the ATD / Encarna Sánchez, Dolores Carrillo, Yves Chevallard and Marianna Bosch
The ecology of study and research paths in upper secondary school : the cases of Denmark and Japan / Britta Jessen, Koji Otaki, Takeshi Miyakawa, Hiroaki Hamanaka, Tatsuya Mizoguci, Yusuke Shinno and Carl Winsløw
The need for new teaching praxeologies in the paradigm of questioning the world / Jean-Pierre Bourgade, Karine Bernad and Yves Matheron
The studying of teachers' mathematical and didactic praxeologies as a tool for teacher education / Gisèle Cirade and Anne Crumière
The education of prospective early childhood teachers within the paradigm of questioning the world / F. Javier García, Tomás Ángel Sierra, Mercedes Hidalgo and Esther Rodríguez
The education of school and university teachers within the paradigm of questioning the world / Berta Barquero, Ignasi Florensa and Alicia Ruiz-Olarría
On the contributions of the ATD to the teaching profession / Klaus Rasmussen, Kaj Østergaard and André Pressiat.