Effect of Concrete-Exemplar Model on Conceptual Understanding of Volumetric Analysis Concept among Federal College of Education Students in North-West, Nigeria. foefujs [Internet]. 2025 Sep. 19 [cited 2026 Mar. 2];5(4):273-81. Available from: https://js.foefugusau.com.ng/index.php/foefujs/article/view/138