Problem-based Learning (PBL): A Teaching Strategy of Environmental Education, in Cañete Municipal School Students. Revista Electrónica Educare, [S. l.], v. 20, n. 1, p. 1–26, 2016. DOI: 10.15359/ree.20-1.6. Disponível em: https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/7524.. Acesso em: 29 apr. 2024.