DATOY, FLORAFEL C. Teaching Competence and Challenges Encountered in Secondary Science Instruction. International Journal of English Language Studies, [S. l.], v. 2, n. 4, p. 33–46, 2020. DOI: 10.32996/ijels.2020.2.4.4. Disponível em: https://al-kindipublishers.org/index.php/ijels/article/view/684. Acesso em: 2 oct. 2025.