Together with physical culture, mental training is very necessary for a child. There are two things which ought to be remembered: one is to develop the mental power of the child, the other to give fineness to a child's mentality. Very often the development in a certain direction hinders the progress in some other direction. In the first place, to make its mentality strong, the child should be taught to concentrate its mind through study and play. It should be given some enterprise which takes most of its attention in one direction, making the child single-minded.