@book {422,
	title = {Spiele zur Unterrichtsgestaltung. Mathematik},
	year = {2010},
	pages = {120},
	publisher = {Verlag an der Ruhr},
	organization = {Verlag an der Ruhr},
	address = {M{\"u}lheim an der Ruhr},
	keywords = {Kopiervorlagen, Lehrerhandreichung, Mathematik, Matheunterricht, Spiele},
	author = {Etzold, Heiko and Petzschler, Ines}
}
