This article draws upon the Deleuzian/Guattarian idea of territorializing movements to trouble the notion of the identity of the learning pre-school child, produced by developmental psychology, as an individual, natural and developing child as well as the more recent image of the child characterised by autonomy and flexible behaviour. Accordingly, a child's apprenticeship of walking is associated here with the movements of a surfer. This association disturbs the orthodox thought of recognition and representation that makes us define, include and exclude children who do not fit into pre-established schemes of development and learning. What is created with the image of the walking child as surfer is a line of flight out of a territory marked by resemblance and error. This line of flight challenges the assumption of a theorist of good will, who with the best intentions knows what is best for children.