@inbook {873, title = {Alleine geht es gut, zusammen manchmal besser! {\textendash} Kooperationen im Sachunterricht beim Experimentieren}, booktitle = {Sache {\textendash} Wort {\textendash} Zahl (SWZ)}, volume = {Heft 101, 04/2009, 37 Jhg.}, year = {2009}, pages = {23-27}, publisher = {Aulis Verlag}, organization = {Aulis Verlag}, address = {Hallbergmoos}, author = {Peschel, Markus} }