@inproceedings{a27ea91f94f44c2189f1b6ecec9739d4,
title = "Finding instructive characteristics of picture books that support the learning of mathematics",
keywords = "Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "{van den Boogaard}, S.A.A. and {van den Heuvel-Panhuizen}, M.H.A.M",
note = "PME",
year = "2006",
month = jul,
day = "16",
language = "Undefined/Unknown",
pages = "428--428",
editor = "J. Novotn{\'a} and H. Moraov{\'a} and M. Kr{\'a}tk{\'a} and N. Stehl{\'i}kov{\'a}",
booktitle = "Proceedings of the 30th Conference of the International Group for the Psychology of Mathematics Education – Mathematics in the centre",
publisher = "PME",
}