@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",

}