TY - JOUR AU - Bożena Maj TI - The role of multistage tasks in developing creative activities among mathematics teachers JO - Didactica Mathematicae PY - 2010 VL - 33 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/dm.v33i0.37/ DO - 10.14708/dm.v33i0.37 LA - pl ID - 10_14708_dm_v33i0_37 ER -