=Problem Aids Control.=--It is true that in cases like the above, the child may gain the required knowledge. The cause for this is, no doubt, that the physical activity demanded of the pupil constitutes indirectly a motive for attending sufficiently to gain the knowledge. But in many cases no such conditions might exist. It is important, therefore, to have the pupil as far as possible realize at the outset a definite motive for each lesson. The advantage consists in the fact that the motive gives a value to the ideas which enter into the new knowledge, even before they are fully incorporated into a new experience. For example, if in a lesson in geometrical drawing, the teacher, instead of having the child set out with the problem of drawing a pair of parallel lines, merely orders him to follow certain directions, and then requests him to measure the shortest distance between the lines at different points, the child is not likely to grasp the connections of the various steps involved in the construction of the whole problem. This means, however, that the learner has not secured an equal control over the new experience. =Pupils Feel Its Lack.=--A further objection to conducting a lesson in such a way that the child may find no motive for the process until the close of the lesson, is the fact that he is himself aware of its lack. In school the child soon discovers that in a lesson he selects and gives attention to various ideas solely in order to gain control over some problem which he may more or less definitely conceive in advance. For this reason, if the teacher attempts, as in the above examples, to fix the child's attention on certain facts without any conception of purpose, the pupil nevertheless usually asks himself the question: "What does the teacher intend me to do with these facts?" Indeed, without at least that motive to hold such disconnected ideas in his mind, it is doubtful whether the pupil would attend to them sufficiently to organize them into a new item of knowledge. When, therefore, the teacher proposes at the outset an attractive problem to solve, he has gone a long way toward stimulating the intellectual activity of the pupil. The setting of problems, the supplying of motives, the giving of aims, the awakening of needs--this constitutes a large part of the business of the teacher. PUPIL'S MOTIVE