@inbook{6381bc38158c4aa8a2b3fb5586c07c94,
title = "Developing assessment problems on percentage",
keywords = "Wiskunde en Informatica (WIIN), Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "{van den Heuvel-Panhuizen}, M.H.A.M.",
year = "2004",
language = "Undefined/Unknown",
isbn = "0 8077 4481 6",
publisher = "Teachers College Press",
pages = "83--99",
editor = "T.A. Romberg",
booktitle = "Standard-based mathematics assessment in middle school: Rethinking classroom practice.",
}