MUHAMED, Jabbar. The effect of the numbered heads strategy on social integration and some basic volleyball skills for second-year intermediate students. Kufa Journal of Physical Education Sciences, Kufa, Najaf, Iraq, v. 1, n. 8, p. 43–59, 2026. Disponível em: https://journal.uokufa.edu.iq/index.php/kjpes/article/view/22416. Acesso em: 16 aug. 2026.