Effects of Gagne’s Instructional Strategy on Senior Secondary Schools Chemistry Students’ Academic Achievement and Attitudes in Hadejia Education Zone Jigawa. Kashere Journal of Education, [S. l.], v. 10, n. 1, p. 197–207, 2026. Disponível em: https://kasherejournalofeducation.org/index.php/kje/article/view/254. Acesso em: 5 oct. 2026.