TY  - JOUR
AU  - Bruno Scheja
AU  - Sabine Castelli
TI  - Developing teacher competence regarding the cognitive requirement of mathematical tasks – a video-based intervention
JO  - Didactica Mathematicae
PY  - 2018
SP  -  65
EP  - 95
VL  - 40
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/dm.v40i0.6433/
DO  - 10.14708/dm.v40i0.6433
LA  - pl
ID  - 10_14708_dm_v40i0_6433
ER  -