00553naa#a2200169#i#450# EN\\bibl\8070 20241113152653.3 2308-8877 20151105b2015####ek#y0engy0150####ca RUS RU Student research activity on the lessons in mathematics Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 5 с. Journal article local Ruzina L. naukaru.ru