EFENDI, Ikhwan. UPAYA MENINGKATKAN HASIL BELAJAR SISWA PADA MATA PELAJARAN IPA MELALUI METODE PEMBELAJARAN PROBLEM BASED INSTRUCTION DI KELAS IV SD. JS (JURNAL SEKOLAH), [S. l.], v. 1, n. 3, p. 125–135, 2018. DOI: 10.24114/js.v1i3.8853. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/js/article/view/8853. Acesso em: 5 jul. 2025.