TY  - JOUR
AU  - Lidia Zaręba
TI  - On students’ difficulties in changing their original procedure on the example of a task concerning differential comparison
JO  - Didactica Mathematicae
PY  - 2018
SP  -  97
EP  - 129
VL  - 40
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/dm.v40i0.6455/
DO  - 10.14708/dm.v40i0.6455
LA  - pl
ID  - 10_14708_dm_v40i0_6455
ER  -