The idea of constructivism now pervades educational literatures. Constructivism is used to characterize learning theory, teaching techniques, and a general pedagogical approach. Constructivism implies that knowledge is always constructed by an individual. It stresses the need to encourage positive participation by students. Both the major constructivisms --psychological and social --have important educational implications. Psychological constructivists focus on individual learning. According to them, the unit of analysis is the individual knower. For social constructivists, however, the correct unit is the social group or culture. Theory of learning in constructivism can be clarified by comparing psychological constructivism with social constructivism.
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