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knowledge. Problem solving always produces knowledge that is much more useful and valuable than the information on which it is based. The difference is the expertise. Problem solving generates this know-how. Many students come to a halt in their practical projects, because they do not know how to calculate a certain parameter. In real life situations, there are many things we cannot calculate and predict; yet there is an empirical method available. One must know when to use the empirical method and when to use calculations and design. Calculations and design formulae are themselves based on empirical data as on the scientific knowledge. Often, empirical knowledge leads to new technology and scientific understanding follows later. Problem solving gives a proper balance between an empirical approach and a scientific approach. Problem solving teaches us patience, judgment between alternatives, self-evaluation and all those qualities that are invaluable in real life. This is because when problem solving is made part of the curriculum; we are putting up a real life situation, chosen for its shorter duration. By our definition, problem solving gives a sense of achievement (a "Eureka" feeling) when a job is successfully completed. This joy has its own effect on increasing motivation and should lead the students to take up more challenges. Thus, in a way, it induces the pursuit of excellence. Civilisation has been built on this - each one sharpening his own skills, putting in his best. Problem solving exercises provide an outlet for creativity and thus encourage it. Rural Development Through Education System 73
