Evaluation of Operationality and Utilization of Instructional Materials for Teaching and Learning of Economics among Senior Secondary Schools in North-West, Nigeria. Federal University Gusau Faculty of Education Journal, [S. l.], v. 6, n. 2, p. 206–216, 2026. DOI: 10.64348/zije.2026315. Disponível em: https://js.foefugusau.com.ng/index.php/foefujs/article/view/315. Acesso em: 4 apr. 2026.