@inbook{585b8e4dda19482abbdc9665e3ced9de,
title = "Awareness of Big Ideas in Mathematics Classrooms - The Proejct ABCmaths",
author = "S Kuntze and S Lerman and B Murphy and H-S Siller and E Kurz-Milcke and P Winbourne and A Dreher and A Wagner and C W{\"o}rn and Chr Vogl and Fuchs, \{Karl Josef\} and M Schneider",
year = "2011",
language = "English",
pages = "9--12",
booktitle = "Big Ideas im Zentrum des Mathematikunterrichts (Kuntze, S. Dreher, A. Hrsg.)",
publisher = "Verlag der PH Ludwigburg",
}