LAÑA, G. Least Learned Competencies in Mathematics 8: Basis in Crafting Strategic Intervention Materials. Journal of Research and Investigation in Education , [S. l.], v. 1, n. 3, p. 75–81, 2023. DOI: 10.37034/residu.v1i3.158. Disponível em: https://residu.org/index.php/residu/article/view/158. Acesso em: 1 jul. 2025.