"Gruppenunterricht." . . "Kooperatives Lernen." . . "Trabajo en grupos (Educación)" . . . . . . . . "A guidebook for cooperative learning a technique for creating more effective schools"@en . "A guidebook for cooperative learning a technique for creating more effective schools" . . . . . "A guidebook for cooperative learning : a technique for creating more effective schools"@en . "A guidebook for cooperative learning : a technique for creating more effective schools" . . . . . . . . . . . . . . "Enseignement Travail en équipe." . .