OBIKEZIE MC, EKE JA, Abumchukwu AA. COMPARATIVE EFFECTS OF TEACHING WITH IMPROVISED INSTRUCTIONAL MATERIALS AND STANDARD INSTRUCTIONAL MATERIALS ON SECONDARY SCHOOL STUDENTS’ ACADEMIC RETENTION IN CHEMISTRY. JSTME [Internet]. 2022 Dec. 15 [cited 2024 Apr. 27];5(1):24-36. Available from: https://journals.unizik.edu.ng/jstme/article/view/1495