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Starfish (214)
Some important names and concepts: Jean Piaget's Stages of Cognitive Development, (through assimilation and accommodation): sensorimotor (infancy), pre-operational (early), concrete operational (elementary), formal operational (adolescents-adults). Lev Vygotsky's Social Development Theory with more knowledgeable peers and a Zone of Proximal Development; Jerome Bruner's Three Modes of Representation, enactive, iconic, and symbolic.