00726naa#a2200181#i#450# EN\INFRA-M\bibl\48880 /en/manage/index 20250815101700.5 1998-0728 20220221b2022####ek#y0engy0150####ca RU Problems Arising in the Course of Teaching Younger Schoolchildren with Different Levels of Academic Achievement, and Ways to Solve Them Journal article Moscow INFRA-M Academic Publishing LLC. 2022 5 с. Journal article local Образование. Воспитание. Обучение. Организация досуга. 37 Vinogradova Natalya Fedorovna fht.editorum.ru /en/manage/index