AL LAHIBI, A. The effect of the flexible group strategy on the acquisition of historical concepts among first-grade intermediate students. Journal of Education for the Humanities , [S. l.], v. 3, n. 112, p. 425–446, 2023. Disponível em: https://edusj.uomosul.edu.iq/index.php/jeh/article/view/43092. Acesso em: 10 sep. 2025.