%0 Journal Article %A Witold PajÄ…k %T Role of the CABRI computer program for the assimilation of mathematical contents by polish middle school (gymnasium) students %J Didactica Mathematicae %D 2009 %V 32 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/dm.v32i0.28/ %R 10.14708/dm.v32i0.28 %G pl %F 10_14708_dm_v32i0_28