SUMMARY
Modern researches on synthetic media development cover a wide range of psychological, pedagogical and technological issues. Research methodology in this area is formed largely spontaneously, so it retains conceptual contradictions and fuzziness. When developing new teaching methods using modern information and communication technologies, the problem of clear conceptualization of new organizational and methodological forms for education and psychological interactions in these environments is relevant. Synthetic learning environment is one of the specialized synthetic environments, much of which is represented by artificially created components and in which the subject of the educational process largely functions as an operator-researcher, using technical means to acquire knowledge, skills, competencies. Any synthetic learning environment is a part of the student natural and cultural environments, so the description of agents’ activity in these environments is an important theoretical and methodological task for psychology and related sciences.The article deals with a set-theoretic method for processes description as a conceptualized tool for synthetic learning environments, as well as agents’ activity in these environments. The components of synthetic learning environments are proposed to be considered as a set of knowledge elements carriers (knowledge environments) available to the student in the process of educational task performing. We consider some variants of possible relations between student’s sets of knowledge elements and other agents of the synthetic learning environment, taking into account their changes. In particular, we examine three types of processes the result of which are changes in various student mind components and factors of which are the components of synthetic learning environment. On the proposed conceptualization basis it is possible to model and study the changes of all synthetic educational environment components at the stages of its development, application and improvement.