Examlex
Agile methods are a collection of innovative, user-centered approaches to systems development.
Concrete Operations
A stage in Piaget's theory of cognitive development where children begin to think logically about concrete events.
Preoperational
A stage in Piaget's theory of cognitive development where children from about 2 to 7 years think symbolically but are not yet logical.
Piaget
Jean Piaget was a Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development that describes how children construct a mental model of the world.
Formal Operations
The stage in Piaget's theory of cognitive development where individuals are able to think abstractly and reason logically.
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