@incollection{GraefeSchuetteNordmeier2009, author = {Ch. Gr{\"a}fe and Christof Sch{\"u}tte and V. Nordmeier}, title = {"Learner as creator" - Sch{\"u}lerInnen generieren eigene Lernspiele}, booktitle = {Didaktik der Physik - Bochum 2009}, url = {http://publications.imp.fu-berlin.de/806/}, year = {2009}, }