@inbook{e9830a3b7eaa4466915fc5c6a23a3a14,
title = "A hypothetical learning trajectory on measurement and flexible arithmetic",
author = "K.P.E. Gravemeijer and J. Bowers and M. Stephan",
year = "2003",
language = "English",
isbn = "0-87353-556-1",
series = "Journal for Research in Mathematics Education Monograph",
publisher = "National Council of Teachers of Mathematics",
pages = "51--66",
editor = "M. Stephan and J. Bowers and P. Cobb and K.P.E. Gravemeijer",
booktitle = "Supporting students' development of measuring conceptions: Analyzing students' learning in social context",
address = "United States",
}