00556naa#a2200181#i#450# EN\INFRA-M\bibl\13152 20241119091610.2 1998-0744 20160817b2016####ek#y0engy0150####ca RUS RU Methodological Aspects of the Development of Test Tasks As a Means of Mathematical Concepts Formation Journal article Moscow INFRA-M Academic Publishing LLC. 2016 7 с. Journal article local Voinova I. V. Safonova L. A. naukaru.ru