Media type: E-Article Title: Introduction Contributor: Ragano, Serge [Author]; Pasa, Laurence [Author]; Fijalkow, Jacques [Author]; Brossard, Michel [Author] Published in: Les dossiers des sciences de l'éducation ; Vol. 21, n° 1, pp. 7-10 Language: French DOI: 10.3406/dsedu.2009.1147 Identifier: Keywords: article Origination: Footnote: Access State: Open Access Rights information: Attribution - Non Commercial - No Derivs (CC BY-NC-ND)