The Little Biggest

Glossary from RocioLaguna92

Piaget enumerates four stages of development: sensory-motor, pre-operational, concrete-operations and formal operations:

Sensory-motor (0-2 years): For children in their first months, objects have no permanence and when they are not present, they do not exist so they do not try to find them. Later, children will try to localize objects spatially.
Pre-operational representations (2 -7 years): it is the beginning of language and thought.
Concrete-operations (7-11 years old): the first operations appear, although they are operations on objects (spatial and temporal operations, classification, ordering, the idea of number, etc.).
Formal operations (adolescence-adulthood): The child (now teenager or adult) is able to reason on hypotheses and not only on objects.