Hussein Al-Khazraji AM, Ibrahim AA. impact of Reigeluth expansionary model in the Acquisition of historical concepts and the development of inferential thinking among students in the fifth grade literary. J. Tikrit U Hum. [Internet]. 2022 Dec. 8 [cited 2026 Jun. 21];25(2):751-803. Available from: https://jtuh.org/index.php/jtuh/article/view/477