ANGGRENI, N. W. Y.; AGUSTIKA, G. N. S. Model Pembelajaran Problem Based Learning Berbasis Penilaian Portofolio Terhadap Kompetensi Pengetahuan Matematika. Jurnal Ilmiah Pendidikan Profesi Guru, [S. l.], v. 3, n. 1, p. 61–72, 2020. DOI: 10.23887/jippg.v3i1.26814. Disponível em: https://ejournal.undiksha.ac.id/index.php/JIPPG/article/view/26814. Acesso em: 1 may. 2024.