INFLUENCE OF LEARNING IMPLEMENTATION AND PRINCIPAL SUPERVISION ON IMPROVING TEACHERS PERFORMANCE IN TEBING HEIGHTS. Quantum Journal of Social Sciences and Humanities, [S. l.], v. 4, n. 2, p. 47–57, 2023. DOI: 10.55197/qjssh.v4i2.216. Disponível em: https://www.qjssh.com/index.php/qjssh/article/view/216. Acesso em: 22 apr. 2026.