JPPPF, Editor. Front Matter JPPPF Volume 7 Issue 1, July 2021. Jurnal Penelitian & Pengembangan Pendidikan Fisika, [S. l.], v. 7, n. 1, 2021. DOI: 10.21009/1.07100. Disponível em: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/22430. Acesso em: 27 dec. 2024.