1.
Maher Jalil W. The Effectiveness of the controversial experimental approach in chemistry achievement and the nature of scientific knowledge for fifth scientific grade students. Opción [Internet]. 13 de agosto de 2019 [citado 6 de diciembre de 2025];350:1247-82. Disponible en: https://produccioncientificaluz.org/index.php/opcion/article/view/31461