%0 Journal Article
%T TECHNIQUES OF SYSTEM-ACTIVITY APPROACH IN SECONDARY SCHOOL
%A Kovalchuk, E.V.
%K system-activity approach, didactic principles, techniques
%J Scientific and methodological journal &quot;Science and education: modern time&quot;
%D 2017
%N 1
%P 2
%I Non-state educational private institution of additional professional education &quot;Expert-methodological centre&quot;