The Role of Activity-Based Learning in Fostering Problem-Solving Skills Among ECE Children in Private Schools of District East Karachi. Contemporary Journal of Social Science Review, [S. l.], v. 3, n. 4, p. 91–101, 2025. DOI: 10.63878/cjssr.v3i4.1743. Disponível em: https://contemporaryjournal.com/index.php/14/article/view/1743. Acesso em: 31 jan. 2026.