The effectiveness of miniature media in improving junior high school students’ learning outcomes in specific gravity. Educenter : Jurnal Ilmiah Pendidikan, [S. l.], v. 4, n. 1, 2025. DOI: 10.55904/educenter.v4i1.1949. Disponível em: https://jurnal.arkainstitute.co.id/index.php/educenter/article/view/1949. Acesso em: 20 apr. 2026.