THANNOON, afrah; افراح; ALEMAM, safa; صفاء; AHMED, S.; سبهان. The effect of using the round robin in learn the art of performing some volleyball skills and developing the tendency towards physical education for secondary students. Al-Rafidain Journal For Sport Sciences (RJSS), [S. l.], v. 25, n. 77, p. 1–13, 2025. DOI: 10.33899/rjss.2022.175427. Disponível em: https://tanmiyat.uomosul.edu.iq/index.php/rjss/article/view/36180. Acesso em: 6 sep. 2025.