@inbook{a69bd41e855648b5889a0d85d1410147,
title = "Teaching formal mathematics in primary education",
keywords = "Wiskunde en Informatica (WIIN), Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "R. Keijzer",
year = "2004",
language = "Undefined/Unknown",
isbn = "90-74684-22-X",
publisher = "Freudenthal Institute",
pages = "25--34",
editor = "P.H.M. Drijvers",
booktitle = "Classroom-based Research in Mathematics Education. Overview of doctoral research published by the Freudenthal Institute, 2001-2004",
}