Prognosis of project-based instructional package on public secondary school students’ academic achievement in economics in Ebonyi State, Nigeria. Kashere Journal of Education, [S. l.], v. 3, n. 2, p. 48–58, 2023. Disponível em: https://kasherejournalofeducation.org/index.php/kje/article/view/10. Acesso em: 27 oct. 2026.