Improving Learning Outcomes of Underwear Passing In Volleyball Through The Use of Plastic Ball Media For Grade IV Students of SD Inpres Mare. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 3, p. 2937–2951, 2025. DOI: 10.26858/cjpko.v17i3.418. Disponível em: http://competitor.ojsunm.ac.id/index.php/competitor/article/view/418. Acesso em: 7 dec. 2025.