IMPROVING EDUCATIONAL EFFECTIVENESS IN TEACHING PRIMARY EDUCATION SUBJECTS BASED ON INTEGRATION AND THE 4K MODEL. World Bulletin of Education and Learning, [S. l.], v. 2, n. 5, p. 283–288, 2026. Disponível em: http://worldbulletin.org/index.php/1/article/view/468. Acesso em: 25 jun. 2026.