Variative model of training course in the conditions of additional professional education

The research problem and the rationale for its relevance. Modern additional professional education of teachers presupposes timely changes in training courses associated with continuous improvement of informatics teaching methodology, expansion of subject content and study of new IT-technologies. The research problem is to develop and justify the model of a training course that allows modifying its components and the set of digital technologies used without significant transformation of the course structure. The goal of the research is to design a model of the training course that allows modernizing the content, forms and methods of professional development and determining its effectiveness in the system of additional training of computer science teachers. Methodology (materials and methods). The research used methods of analyzing pedagogical and methodological literature on the structure of adaptive training courses, generalization of pedagogical experience in the use of innovative digital technologies and various forms of teacher training. The research correlates modern digital technologies and the pedagogical tasks they solve, and proposes a concentric variation model of the training course, consisting of a goal-setting core and basic topics, a content expansion shell covering new content components, a methodological shell including various forms and methods of teaching, and a technological shell solving the problem of variability of course components, both in terms of the level of the existing skills of students and the set of digital technologies used.