Problem and goal. The article is devoted to the development of a model for assessing the self-understanding of a younger teenager from the standpoint of a psychological and pedagogical approach. The purpose of the article is theoretical and empirical substantiation of the model for studying self-understanding of younger teenagers in educational activities using the Internet. Methodology. The work is based on the analysis of scientific literature on the problem, the modeling method. The study used empirical methods: observation, questionnaire survey, experimental work, qualitative and quantitative interpretation of the data obtained. Results of research. The research was conducted on the basis of modeling: self-understanding as a psychological and pedagogical category, which includes the phases of genetic, structural and systemic self-understanding; educational activities using the Internet as the integration of pedagogical activities and the activities of a teenager in a joint activity. Formulated assumptions: the nature and structure of consciousness, the analysis of self-understanding as part of that operational definition of self-understanding, based on which the proposed assessment model phases: understanding the genetic, structural-understanding. The results of experimental work on the development of self-understanding of younger teenagers in educational activities using the Internet are presented. In conclusion, it is concluded that the implementation of the model of educational activity using the Internet becomes a means of developing self-understanding of the younger teenager, if the activity is built around the values of communication, self-realization and self-understanding, which allow most effectively solve the problems of the adolescent period.