The effect of teaching using the Stepanz model on the fourth grade students’ achievement of chemistry. Journal of the College of Basic Education, [S. l.], v. 22, n. 95, p. 79–106, 2022. DOI: 10.35950/cbej.v22i95.8025. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8025.. Acesso em: 19 jul. 2024.