“…Gruber, Clark, Hroar Klempe and Valsiner (2015) and Murphy (2002) have highlighted the importance of conducting longitudinal studies in ecological contexts, and Pauen, Birgit, Hoehl and Bechtel (2015) have stated that it is crucial to study the influence that adults and semiotic mediation processes have on conceptual development. Our approach is a contribution to the landscape of perspectives criticising perceptual reductionism and advocating for cultural and functional points of view to explain conceptual development (see Barsalou, Sloman & Chaigneau, 2005;Borghi, 2005;Chaigneau & Barsalou, 2008;Chaigneau et al, 2016;Chen et al, 2016;Costall & Dreier, 2006;Krnel & Skubic, 2015;Malafouris, 2013;Margolis & Laurence, 2015;Säljö, 2018;Smith, 2005).…”