Examlex
Data flow diagrams incorporate four symbols.List the symbols; for each one, give two examples of how it might be used in a DFD.
Symbolic Function
A cognitive ability to represent objects, people, and events with symbols or images, characteristic of early childhood development.
Sensorimotor
A stage in Piaget’s theory of cognitive development (from birth to about age 2) where infants learn about the world through their movements and sensory experiences.
Concrete-Operational
A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events and understand concepts of conservation.
Preoperational
A stage in Piaget's theory of cognitive development, during which children aged 2 to 7 years old develop memory and imagination but do not yet think logically.
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