Examlex
Explain the goals and accomplishments of the missions undertaken by Zebulon Pike.
Vygotsky
Lev Vygotsky, a Russian psychologist known for his theory on social development and the concept of the Zone of Proximal Development.
Formal Operations
The stage in Piaget’s theory of cognitive development where adolescents and adults develop the ability to think about abstract concepts and logically test hypotheses.
Concrete Operations
A stage in cognitive development, according to Piaget, where children gain the ability to think logically about concrete events.
Preoperational Thought
A stage in cognitive development, according to Jean Piaget, where children aged 2-7 years are capable of using symbols and language but do not yet understand concrete logic.
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