BELEGE, Marietha Modest. Perceived challenges in implementing the Tanzania’s 2023 revised competency-based curriculum for 21st -century skills development among primary school teachers in Tanzania: A case of Kyela District. African Journal of Empirical Research, Nairobi, Kenya, v. 7, n. 3, p. 1893–1906, 2026. DOI: 10.51867/ajernet.7.3.148. Disponível em: https://ajernet.net/ojs/index.php/ajernet/article/view/2291. Acesso em: 27 sep. 2026.