@conference{d800a35ae0b942ce8821948404d9fbe6,
title = "Developing a 'big picture': Effects of collaborative construction of external representations in history",
author = "M.E. Prangsma and {van Boxtel}, C.A.M. and G. Kanselaar",
note = "Paper presented at the research meeting of the Interuniversity Centre for Educational Research (ICO); Paper presented at the research meeting of the Interuniversity Centre for Educational Research (ICO) ; Conference date: 01-01-2006",
year = "2006",
language = "Undefined/Unknown",
}