OBIKEZIE, M. C., EKE, J. A., & Abumchukwu, A. A. (2022). COMPARATIVE EFFECTS OF TEACHING WITH IMPROVISED INSTRUCTIONAL MATERIALS AND STANDARD INSTRUCTIONAL MATERIALS ON SECONDARY SCHOOL STUDENTS’ ACADEMIC RETENTION IN CHEMISTRY. UNIZIK Journal of STM Education, 5(1), 24–36. Retrieved from https://journals.unizik.edu.ng/jstme/article/view/1495