@inbook{319eee68d8894434aa7a642aa17bee5c,
title = "Semi-informal routines as alternatives for standard algorithms in primary school",
keywords = "Wiskunde en Informatica (WIIN), Mathematics, Pedagogie en Andragogie/Onderwijskunde (PEAN), Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "K.P.E. Gravemeijer and \{van Galen\}, F.H.J. and J.G.H. Boswinkel and \{van den Heuvel-Panhuizen\}, M.H.A.M.",
year = "2004",
language = "Undefined/Unknown",
isbn = "0-7298-0592-1",
publisher = "MASTEC-Edith Cowan University",
pages = "126--136",
editor = "A. McIntosh and L/ Sparrow",
booktitle = "Beyond Written Computation",
}