THE PRINCIPLE OF TAKING INTO ACCOUNT THE COMPLEMENTARITYOF PEDAGOGICAL KNOWLEDGE AT THE DIDACTIC SUPPORTOF TEACHERS’ PROFESSIONAL DEVELOPMENT

. According to the research results the necessity of taking into account the complementarity of pedagogical knowledge about pedagogical activities in the implementation of the didactic support of teachers’ professional development is postulated in pedagogy. Arguments for the implementation of the principle of taking into account the complementarity of pedagogical knowledge to ensure the effectiveness of didactic support for teachers in modern conditions of postgraduate pedagogical education are given. Information technology tools, which allow us to implement this principle in the didactic support of teachers’ professional development, are characterized.