Effect of using the six-dimensional strategy The (PDEODE) in the achievement of the second grade students for the scientific concepts and retain them. Journal of the College of Basic Education, [S. l.], v. 26, n. 107, p. 1–23, 2022. DOI: 10.35950/cbej.v26i107.5081. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/5081.. Acesso em: 3 jul. 2024.