MENDOZA-PEÑARRIETA, F. L.; ALCÍVAR-CEDEÑO, M. D. del R. Poor academic performance in mathematics of upper basic students. International journal of physics & mathematics, [S. l.], v. 5, n. 1, p. 21-27, 2022. DOI: 10.21744/ijpm.v5n1.1909. Disponível em: https://sloap.org/journal/index.php/ijpm/article/view/1909. Acesso em: 16 jul. 2024.