POPOV , P. USE OF FREE SOFTWARE IN DISTANCE EDUCATION OF MATHEMATICS. Distance Education in Ukraine: Innovative, Normative-Legal, Pedagogical Aspects, [S. l.], v. 1, n. 2, p. 347–352, 2023. DOI: 10.18372/2786-5495.1.17339. Disponível em: https://jrnl.nau.edu.ua/index.php/DEU/article/view/17339. Acesso em: 20 apr. 2024.