%0 Journal Article
%A Bruno Scheja
%A Sabine Castelli
%T Developing teacher competence regarding the cognitive requirement of mathematical tasks – a video-based intervention
%J Didactica Mathematicae
%D 2018
%P  65-95
%V 40
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/dm.v40i0.6433/
%R 10.14708/dm.v40i0.6433
%G pl
%F 10_14708_dm_v40i0_6433