@inbook {731, title = {Editorial}, booktitle = {Lernsituationen und Aufgabenkultur im Sachunterricht}, volume = {24, Probleme und Perspektiven des Sachunterrichts}, year = {2014}, pages = {9-16}, publisher = {Verlag Julius Klinkhardt}, organization = {Verlag Julius Klinkhardt}, address = {Bad Heilbrunn}, author = {Fischer, Hans-Joachim and Giest, Hartmut and Peschel, Markus}, editor = {Fischer, Hans-Joachmin and Giest, Hartmut and Peschel, Markus} }