00673naa#a2200193#i#450# EN\\bibl\3101 20260101035541.4 2308-8877 20140617b2014####ek#y0engy0150####ca RUS RU The use of task with parameters as a means to summarize and systematize the mathematical knowledge school children Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Malev V Belyaeva E. Sapozhnikova N naukaru.ru