ODOOM, E.; MEREKU, D. K.; SARPONG ADUSEI, M. Effect of Problem-based Learning on High School Students’ Performance in Solving Simultaneous Linear Equation Word Problems. African Journal of Educational Studies in Mathematics and Sciences, [S. l.], v. 20, n. 1, p. 75–83, 2024. DOI: 10.4314/ajesms.v20i1.5. Disponível em: https://www.ajol.info/index.php/ajesms/article/view/272543. Acesso em: 4 aug. 2026.