PENGARUH MODEL PEMBELAJARAN PORTOFOLIO TERHADAP KESULITAN BELAJAR SISWA . Jurnal Inovasi Sekolah Dasar, [S. l.], v. 2, n. 1, p. 34–38, 2026. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jisd/article/view/70484. Acesso em: 24 mar. 2026.