PELAYO, E. O.; PELAYO, L. O. BARRIERS IN TEACHING-LEARNING PROCESS IN SECONDARY MATHEMATICS: A CLAMOUR FOR STERLING IMPROVEMENT. Journal of Education and Innovation, [S. l.], v. 24, n. 2, p. 26–37, 2020. Disponível em: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/214830. Acesso em: 16 sep. 2026.