PAKHSHAN HAWEZ HASAN; HUSSEN SAADI IBRAHIM; SERWAN ARAB SADIQ. The Effect of the Differentiated Instruction Strategy on Developing : students’ Cognitive Achievement of the Twelfth Literary Grade in Geography and Retaining it. QALAAI ZANIST JOURNAL, [S. l.], v. 6, n. 3, p. 372–409, 2021. DOI: 10.25212/lfu.qzj.6.3.12. Disponível em: https://journal.lfu.edu.krd/ojs/index.php/qzj/article/view/696. Acesso em: 19 may. 2024.