KHALAF, A. I. The Effect of Using a Problem-solving Strategy in Developing Scientific Concepts among Preparatory Students. Journal of Tikrit University for Humanities, [S. l.], v. 31, n. 2, p. 307–328, 2024. DOI: 10.25130/jtuh.31.2.2024.16. Disponível em: https://jtuh.org/index.php/jtuh/article/view/3110. Acesso em: 15 jul. 2026.