This text recounts the project ?Mediated childhoods?, a mixed action-research and arts-based educational research project, conducted at the Faculty of Education, Psychology and Social Work at the University of Lleida. Its aim is to incorporate technological discourses and mediations as educational content and, in particular, to explore the use of visual narratives and media images in art education in the various teacher training degrees of the FEPTS. To do so, it investigates the visual narratives created by the Faculty?s students: autobiographical images ?in relation to their own childhood media experiences? and, at the same time, the creation of visual counter-discourses on the media imaginary. The interconnection between images and texts, between creation and interpretation, between exploring the images and mediations of one?s own childhood and the interrelationship with other images and times is analysed. The investigation reveals the difficulties of thinking about our roles as consumers of visual culture in relation to the construction of teacher identities; it demonstrates the importance of questioning certain myths and discourses about ?childhood?, in order to take educational responsibility for different childhoods. In times of media hypervisibility, this investigation proposes other forms of critical construction of teacher identities, relating artistic practices, visual studies and critical pedagogies. Keywords: visual arts; education; teacher training; arts research; media influences; critical pedagogies.