As human beings we naturally ask questions about how useful and how valuable our activities are. We can think of evaluation as a process of considerably sharpening this natural activity of checking on our ongoing work. A more formal definition is to think of evaluation as ‘providing information to make decisions about the product or process’. Evaluation is not equivalent to research, although it employs research techniques as a means of generating the necessary information, and uses similar criteria for the reliability and validity to judge the quality of the…

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