00612naa#a2200181#i#450# EN\INFRA-M\bibl\39504 20240724222527.3 2306-1731 20200921b2020####ek#y0engy0150####ca RU Alternative Teaching Classes in Chemistry as a Way to Increase Student Motivation to Learn Journal article Moscow INFRA-M Academic Publishing LLC. 2020 5 с. Journal article local Статистика. Демография. Социология. 31 Yarkova T. A. Rabadanova R. S. naukaru.ru