@inbook{7a3cba7651214134b1dee8feaefcdc79,
title = "From artifacts to instruments: A theoretical framework behind the orchestra metaphor",
keywords = "Wiskunde en Informatica (WIIN), Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "P.H.M. Drijvers and L. Trouche",
year = "2008",
language = "Undefined/Unknown",
publisher = "Information Age",
pages = "363--392",
editor = "G.W. Blum and M.K. Heid",
booktitle = "Research on technology and the teaching and learning of mathematics: Vol. 2. Cases and perspectives",
}