15. A baby can count
Just born, your baby is already sensitive to the quantities. How do we know? If a picture with two points is proposed to a newborn baby several times, he gets used to it and does not express his interest. But if you then show him an image with three points, this is the little spectator who comes alive: he perceived the novelty. Conclusion? He knows how to differentiate between a set of two elements and another of three. But do not expect too much: if you ask him to differentiate between four and six points, he does not know where to turn!