Wilson, Evelina. “Effectiveness of Problem-Solving and Student Centred Instructional Strategies on students’ Achievement in Algebra: A Systematic Review”. African Quarterly Social Science Review 3, no. 4 (October 9, 2026): 123–135. Accessed October 10, 2026. https://quarterlyreview.net/ojs/index.php/aqssr/article/view/745.