METHODS OF EFFECTIVE ORGANIZATION OF TEACHING OF MATHEMATICS BY USING THE PROBLEM-BASED TEACHING. International Journal of Innovative Technologies in Social Science, [S. l.], n. 9(21), p. 9–12, 2019. DOI: 10.31435/rsglobal_ijitss/30122019/6853. Disponível em: https://rspublisher.org/index.php/ijitss/article/view/941. Acesso em: 17 mar. 2026.