1.
Ural E, Dadli G. The Effect of Problem-based Learning on 7th-grade Students’ Environmental Knowledge, Attitudes, and Reflective Thinking Skills in Environmental Education. JESEH [Internet]. 2020 Apr. 30 [cited 2024 Nov. 23];6(3):177-92. Available from: https://jeseh.net/index.php/jeseh/article/view/283