%0 Journal Article %T PROFESSIONAL ADVANCEMENT OF TEACHERS IN THE CONTEXT OF EDUCATIONAL ACTIVITY: CONCEPTUAL AND MANAGERIAL ASPECTS %A Legostaev, B.L. %K professional advancement of teachers, professional development of teachers, educational activity, management of teachers’ professional advancement %J Science and education: new time %D 2017 %N 1 %P 6 %I Non-state educational private institution of additional professional education "Expert-methodological centre"