DAHUNSI T.O PHD. An Assessment of the Availability & Effect of Instructional Materials for the Teaching of Basic Science in Junior Secondary Schools in Bwari Area Council Abuja, Fct. Journal of Contemporary Education Research, Nigeria, v. 2, n. 1, 2023. Disponível em: https://hummingbirdjournals.com/jcer/article/view/115.. Acesso em: 10 feb. 2026.