116 THE DISCOVERY OF THE CHILD by the usual gymnastics. But the exercises of practical life cannot be regarded as simple muscular gymnastics; they are part of the work. It is the restful work of muscles which function without growing tired because interest and variety renew them with every movement. It is the exercise natural to man who, when he moves* ought to have an object in view; muscles ought always to serve the intelligence and thus remain in functional unity with the human personality. If man is an intelligent creature and is muscularly active, then his rest lies in intelligent activity, as the rest of every other creature lies in the normal exercise of its functions* We must, then, offer to the child means within his surround- ings by which to exercise his activity, remembering that the Children's House includes children of various ages—from three to six years—who all live together like members of a family and who,, therefore, require different occupations. The objects which we use for practical life have no scientific signification; they are the objects in use where the child lives and which he sees being used in his home; they are made, however, in sizes adapted to the little man. The quantity is not fixed by the method, but depends on the resources of the school, and above all on the length of time which the child spends in school each day. If the school has a garden attached to it, there will form part of the practical operations such work as taking care of the paths, tidying up the plants, gathering fruit when it is ripe and so on. If the day's time-table is very long, dinner will form part of the occupa- tions; it introduces effort and action more difficult and more interesting than any other kind of practical work; it includes laying the table with the utmost care, serving at table, eating properly, washing plates and cups, carrying away and storing pots and pans* and so on. THE WORK When the child arrives in school, he takes off his own gar- ments. Little hooks, fixed to the wall at such a height that the arm of the child can reach them comfortably, are at his disposal..