FAYYAD AL – JUBOURI, M. S.; NASIF AL – AZI, M. A. The Impact of Strategy 4h in the Achievement of Fifth Grade Students in the History and Development of Their Systemic Thinking. Journal of Tikrit University for Humanities, [S. l.], v. 26, n. 6, p. 479–501, 2019. DOI: 10.25130/jtuh.26.6.2019.22. Disponível em: https://jtuh.org/index.php/jtuh/article/view/712. Acesso em: 6 aug. 2026.