FARHANA NAZ*; DR ATEEQ AHMAD TARIQ; IJAZ UL HAQ. MATHEMATICS ACHIEVEMENT IN MONOGRADE AND MULTIGRADE CLASSROOMS: A COMPARATIVE STUDY FROM PUBLIC PRIMARY SCHOOLS IN LOWER CHITRAL, PAKISTAN. Policy Journal of Social Science Review, [S. l.], v. 4, n. 5, p. 293–309, 2026. Disponível em: https://policyjssr.com/index.php/PJSSR/article/view/951. Acesso em: 10 may. 2026.