SALEH, A. The effect 4E×2 of a model in the development of engineering thinking for second –grade students in mathematics. Journal of Education for the Humanities , [S. l.], v. 4, n. 132, p. 575–600, 2024. DOI: 10.33899/jeh.v4i132.52300. Disponível em: https://jeh.uomosul.edu.iq/index.php/jeh/article/view/52300. Acesso em: 14 dec. 2025.