The existence of a numerical mental line where different numbers are represented in the space from left to right, has been demonstrated in adults by numerous studies. The objective of this project is to study if this representation depends on learning or if it is present from an early age.

Our perceptual system permanently encodes numerical and geometric information from the surrounding world. These intuitions, present from an early age, may serve as a basis for the acquisition of mathematical knowledge. However, primitive intuitions remain limited, and therefore do not entirely explain how we learn the simplest mathematical concepts, such as natural integers and Euclidean geometry.