The Effectiveness of Using Short Motivational Videos in Improving Some Types of Tennis Serving Among Third Year Students at the College of Physical Education and Sports Sciences, University of Mosul. College of Basic Education Research Journal, [S. l.], v. 22, n. 3, p. 127–146, 2026. DOI: 10.33899/berj.2026.Vol22.Iss3.62618. Disponível em: https://berj.uomosul.edu.iq/index.php/berj/article/view/62618. Acesso em: 8 sep. 2026.