%0 Journal Article %A Zhelyazkova, Tsvetelina %A Boykina, Dobrinka %T Using a heuristic approach in maths education in 6th - 7th grade %J Mathematics and Education in Mathematics %D 2021 %P 252-260 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/item/MEM_2021_50_a29/ %G bg %F MEM_2021_50_a29