“…These educational mathematical needs are related to the integration of visual-spatial information, focus of selective and sustained attention, and inhibitional control, as well as to the elaboration of the action steps prior to execution, assessment of these actions (updating working memory), and elimination of non-target behavior (inhibition), as measured by the D.N: CAS (Naglieri & Das, 2005). The improvement of these processes helps making decisions about solving problems, monitoring the action, retrieving and applying the number facts, and assessing the responses (Das et al, 1994), as well as reading numbers, considering their place value, transcoding them, and managing the numerical system more fluently (Fuson & Kwon, 1992;Villarroel et al, 2012). The PREP model is thus coherent with the approach of the convergent study of specific and general domain skills (Geary, 2011;Mazzocco et al, 2011;Passolunghi & Lanfranchi, 2012), considered important to explain mathematical learning difficulties.…”