FIRDAUS, F.; AKIB, I.; SUKMAWATI, S. A Conceptual Framework for Implementing a Problem-Solving Based Mathematics Curriculum in Vocational Education. PPSDP International Journal of Education, [S. l.], v. 4, n. 2, p. 608–615, 2025. DOI: 10.59175/pijed.v4i2.766. Disponível em: https://ejournal.ppsdp.org/index.php/pijed/article/view/766. Acesso em: 10 jul. 2026.