The Effect of E-Learning Application through the Use of Whatsapp-Assisted Edmodo on the Students’ Learning Outcomes in the Concept of Sound Waves. Jurnal Pendidikan Fisika, [S. l.], v. 9, n. 1, p. 56–62, 2021. DOI: 10.26618/jpf.v9i1.4361. Disponível em: https://journal.unismuh.ac.id/index.php/jpf/article/view/4361. Acesso em: 26 aug. 2025.