The Role and Impact of Elderly Teachers on Teaching Secondary School Competencies in Tanzania: Addressing Teacher Shortages. International Journal of Education Foundations, [S. l.], v. 1, n. 1, p. 29–34, 2024. DOI: 10.33687/ijef.001.01.0004. Disponível em: https://ijef.esciencepress.net/index.php/journal/article/view/4. Acesso em: 18 may. 2026.