URAL, Evrim; DADLI, Guzide. The Effect of Problem-based Learning on 7th-grade Students’ Environmental Knowledge, Attitudes, and Reflective Thinking Skills in Environmental Education. Journal of Education in Science, Environment and Health, [S. l.], v. 6, n. 3, p. 177–192, 2020. Disponível em: https://www.jeseh.net/index.php/jeseh/article/view/283. Acesso em: 2 may. 2024.