AJA, Lucy; OKUKU, Igwe Chinedu; MUHAMMAD, Tukur; ELOM, Iruka John; MOHAMMAD, Lubega; EZEONWUMELU, Chinyere Grace; OKO, Kingsley Ikechukwu. Impacts of Instructional Materials in Enhancing Biology Concepts Retention among Secondary School Students in Izzi, Ebonyi State, Nigeria. Journal of Research in Environmental and Science Education, [S. l.], v. 3, n. 1, p. 46–57, 2026. DOI: 10.70232/jrese.v3i1.43. Disponível em: https://spm-online.com/jrese/index.php/journal/article/view/43. Acesso em: 29 apr. 2026.