Inyang FN, Uboh DE, Utibe UJ. The Effect of Demonstration, Guided-Discovery and Expository Instructional Methods on Senior Secondary Students Achievement in Physics in Ikot Abasi Local Government, Nigeria. JRES [Internet]. 2022 Dec. 30 [cited 2024 Sep. 19];13(3):124-35. Available from: http://icidr.org.ng/index.php/Jres/article/view/1527