KAZEMBE, T.; SITHOLE, M. Effectiveness of Teachers at Preparing Grade 7 Candidates for Environmental Science Examinations. International Journal of Physics & Chemistry Education, [S. l.], v. 2, n. 2, p. 64–81, 2010. DOI: 10.51724/ijpce.v2i2.118. Disponível em: https://www.ijpce.org/index.php/IJPCE/article/view/118. Acesso em: 25 jun. 2022.