“…Even so, it is common for students to have serious difficulties when carrying out the processes that are part of the inquiry work, such as the formulation of a hypotheses and inquiry questions (Ferrés-Gurt, 2017;Furman, Barreto & Sanmartí, 2013;Oliveras, Márquez & Sanmartí, 2012), the identification of variables and the design of experiments (Crujeiras & Jiménez, 2015;Cruz-Guzmán, García-Carmona & Criado, 2017;D'Costa & Schlueter, 2013;Ferrés, Marbà & Sanmartí, 2015;González & Crujeiras, 2016), data analysis and the elaboration of argued conclusions (Sanmartí & Oliveras, 2011;Vílchez & Bravo, 2015), and so on. These difficulties probably have their origin, as some authors point out, in the lack of preparation of students for carrying out each of these stages, since, in most cases, this is the first time that high school students face real research work (Ferrés et al, 2015).…”