@inproceedings{63de75258bfa40c99e939d3cdf4f7e00,
title = "What makes mathematics so difficult, and what can we do about it?",
keywords = "Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "K.P.E. Gravemeijer",
year = "2005",
language = "Undefined/Unknown",
pages = "83--101",
editor = "L. Santos and A.P. Canavarro and J. Brocado",
booktitle = "Proceedings of the international Conference 'Educa{\c c}{\~a}o Matem{\'a}tica: caminhos e encruzilhadas'",
publisher = "APM",
}