GREEN, B. Improvisation of instructional materials and junior secondary school students’ academic achievement in basic science in Rivers State, Nigeria. Faculty of Natural and Applied Sciences Journal of Mathematics, and Science Education, [S. l.], v. 5, n. 1, p. 102–110, 2023. Disponível em: https://fnasjournals.com/index.php/FNAS-JMSE/article/view/246. Acesso em: 18 oct. 2024.