00612naa#a2200169#i#450# EN\\bibl\3986 20241222044557.7 2308-8877 20141113b2014####ek#y0engy0150####ca RUS RU Differentiated instruction as a means of implementing competence approach in mathematics lessons Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 4 с. Journal article local CHyernyshova YElyena anni.editorum.ru