Ivanytska, Nataliia A., and Oleksandr Ye. Stryzhak. 2014. “ROLE OF ONTOLOGY IN THE SYSTEM OF FORMATION OF EDUCATIONAL AND COGNITIVE COMPETENCES ON PHYSICS OF SECONDARY SCHOOL PUPILS”. Information Technologies and Learning Tools 39 (1): 160-69. https://doi.org/10.33407/itlt.v39i1.975.