SIDABUTAR, Ropinus. PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING MENGGUNAKAN MEDIA MICROSOFT FRONTPAGE DAN AKTIVITAS BELAJAR TERHADAP HASIL BELAJAR MATEMATIKA KELAS X SMA. JGK (Jurnal Guru Kita), [S. l.], v. 5, n. 1, p. 17–22, 2020. DOI: 10.24114/jgk.v5i1.20406. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jgkp/article/view/20406. Acesso em: 3 jul. 2025.