Inyang IF, Isaac EO. Effects of Problem-Solving and Demonstration Methods on Students’ Performance in Biology in Nsit-Atai Local Government Area, Akwa Ibom State, Nigeria. JRES [Internet]. 2023 Apr. 1 [cited 2025 Mar. 12];14(1):4-10. Available from: https://icidr.org.ng/index.php/Jres/article/view/1533