While according to personal (2009) States that some of the events that mark the learners do the construction knowledge, is to write a hypothesis to explain a phenomenon seen and overcome the problems that are being faced by collaboratively. This happens because the learning process centred on learners and of cooperation among group members. Of research results Kusmiati (2007) and personal opinion (2009) then it can be concluded that there is a personal Foundation of Constructivism theory of Piaget and occurring social constructivism occurs which is the cornerstone of the theory of Vygotsky.
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