PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATERI POKOK PESAWAT SEDERHANA DI KELAS VIII SMPN 14 MEDAN . Jurnal Visi Eksakta, [S. l.], v. 2, n. 1, p. 72–85, 2021. Disponível em: https://ejournal.uhn.ac.id/index.php/eksakta/article/view/202. Acesso em: 22 oct. 2026.