“STEM activities in initial training of teachers: new teaching approaches for the challenges of the 21st century”, Rev.Electr.Dialog.Educ., vol. 18, no. 33, pp. 35–46, Sep. 2017, Accessed: Jul. 04, 2026. [Online]. Available: http://revistas.umce.cl/index.php/dialogoseducativos/article/view/1168