=B. Not too much Emphasis on Manual Skill.=--Again, in expressive exercises intended merely to impart new knowledge, it may happen that the teacher will lay too much stress on perfect form of expression. In these exercises, however, the purpose should be rather to enable the child to realize the ideas in his expressive actions. When, for example, a child, in learning such geographical forms as island, gulf, mountain, etc., uses sand, clay, or plasticine as a medium of expression, too much striving after accuracy of form in minor details may tend to draw the pupil's attention from the broader elements of knowledge to be mastered. In other words, it is the gaining of certain ideas, or knowledge, and not technical perfection, that is being aimed at in such expressive movements.
=3. Instinct of Curiosity as Motive.=--The value of the instinct of curiosity in setting a problem for the young child has been already referred to. From what was there seen, it is evident that to the extent to which the teacher awakens wonder and curiosity in his presentation of a lesson problem, the child will be ready to enter upon the further steps of the learning process. For example, by inserting two forks and a large needle into a cork, as illustrated in the accompanying Figure, and then apparently balancing the whole on a small hard surface, we may awaken a deep interest in the problem of gravity. In the same manner, by calling the pupils' attention to the drops on the outside of a glass pitcher filled with water, we may have their curiosity aroused for the study of condensation. So also the presentation of a picture may arouse curiosity in places or people.
=4. Ownership as Motive.=--The natural pleasure which children take in collection and ownership may often be associated with presented problems in a way to cause them to take a deeper interest in the knowledge to be acquired. For example, in presenting a lesson on the countries of Europe, the collection of coins or stamps representative of the different countries will add greatly to the interest, compared with a mere outline study of the political divisions from a map. A more detailed examination of the instincts and tendencies of the child and their relation to the educative process will, however, be found in Chapter XXI.