Sellama, Hanane Kaouther, and Mohamed Boulkamh. “The Reality of teachers’ Use of the Problem-Solving Strategy in Teaching Mathematics According to Second-Generation Curricula for Middle School Students”. Journal of Human Sciences , vol. 34, no. 3, Jan. 2024, pp. 453-67, https://revue.umc.edu.dz/h/article/view/4181.