The degree of using the problem-centered learning strategy in teaching social studies from the point of view of teachers of the first cycle of basic education. Journal of Hama University , [S. l.], v. 5, n. 3, 2022. Disponível em: https://journal.hama-univ.edu.sy/huj/article/view/1122. Acesso em: 6 jun. 2026.