@inbook{b68e80acb8cb4ab9b65faf001adf46ae,
title = "Wie ver{\"a}ndert sich die mathematische Kompetenz von der neunten zur zehnten Klassenstufe",
keywords = "Erziehungswissenschaften",
author = "Timo Ehmke and Werner Blum and Michael Neubrand and Alexander Jordan and Frauke Ulfig",
year = "2006",
language = "Deutsch",
isbn = "978-3-8309-1700-7",
pages = "63--86",
editor = "M. Prenzel and J. Baumert and W. Blum and R. Lehmann and D. Leutner and M. Neubrand and R. Pekrun and J. Rost and \{Schiefele \}, U.",
booktitle = "PISA 2003",
publisher = "Waxmann Verlag",
address = "Deutschland",
}