@inproceedings{4ec8d2e507e84e24ac7ce328bb585266,
title = "Fraction skills at the start of secondary education in the Netherlands",
author = "{Bruin - Muurling}, G. and {Eijck, van}, M.W. and K.P.E. Gravemeijer",
year = "2009",
language = "English",
volume = "1",
pages = "348--348",
editor = "M. Tzekaki and M. Kaldrimidou and H. Sakonidis",
booktitle = "Proceedings of the 33rd Conference of the International Group for the Psychology of Mathematics Education",
note = "33rd Conference of the International Group for the Psychology of Mathematics Education ; Conference date: 19-07-2009 Through 24-07-2009",
}