00701naa#a2200193#i#450# EN\INFRA-M\bibl\123036 20260514104151.4 1998-1740 20260430b2026####ek#y0engy0150####ca RU Master Class as a Form of Improving the Professional Competencies of a Teache Journal article Moscow INFRA-M Academic Publishing LLC. 2026 4 с. Journal article local Народное образование. Воспитание. Обучение. Организация досуга. 37 Sabel'nikova-Begashvili N. N. Damianova E. V. Khudoverdova S. naukaru.ru