If games are too easy, a child will become bored and learn nothing new; if it is too difficult, he cannot play with it and therefore abandons it. The best strategy is to take into account what the child already knows how to do. The object of the game should be to put the child in a position of trying out something slightly more difficult than his current ability. The great psychologist L.Vygotskij defined this as the “zone of next development”. This is where a child, thanks to the support of an attentive grown-up or of a little friend more expert than himself, succeeds in developing his own solution to the problem that a new game presents. Here, an adult can really contribute to the healthy development of a child, getting him to try out experiences a little more testing than he is used to. By providing some assistance – but always with regard to the child’s autonomy – an adult can help the child in making a leap towards acquiring new skills and abilities.