%0 Journal Article %A Judita Cofman %T How to Motivate 10--18 Years old Pupils to Work Independentle on Solving Mathematical Problems %J The Teaching of Mathematics %D 2000 %P 83 %V III %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM2_2000_III_2_a1/ %G en %F TM2_2000_III_2_a1