Haukur Arason
The Educational University of Iceland
Stakkahlíð
105 Reykjavík
Ísland
e-mail: arason@khi
tel: +354 563 3919
Kristján Ketill Stefánsson
Department of Teacher Education and School Development (ILS)
University of Oslo
P.O. Box 1099 Blindern
0317 Oslo
Norway
e-mail: kristjas@ulrik.uio.no or kristjas@student.matnat.uio.no