00491naa#a2200169#i#450# EN\INFRA-M\bibl\164 20240810063252.6 2306-1731 20130305b2013####ek#y0engy0150####ca RUS RU Innovative approaches of high school students’ project activities Journal article Moscow INFRA-M Academic Publishing LLC. 2013 0 с. Journal article local Kalney Vladimir naukaru.ru