Jean Piaget was a Swiss biologist who developed a theory of cognitive development in children. He proposed that children progress through four main stages of development - sensorimotor, preoperational, concrete operational, and formal operational - as their understanding becomes less egocentric and they develop the ability to think logically and hypothetically. At each stage, children advance their cognitive abilities through the processes of assimilation, accommodation, and adaptation as their experiences interacting with the world help them classify objects and conserve quantities.

1. PIAGET
(1896- 1980)
was A biologist
The
development of
children’s
understanding
But
moved
into
HIS KEY IDEAS
STAGE OF COGNITIVE DEVELOPMENT
ADAPTION
ASIMILATION
ACOMMODATION
CLASSIFICATION
OPERATION
CLASS INCLUSION
SCHEMA
CONSERVATION
STAGE
DECENTRATION
EGOCENTRISM
SENSORI – MOTOR
(BIRTH – 2 YEARS)
PRE – OPERATIONAL
(2 – 7 YEARS)
CONCRETE
OPERATIONAL
(7 – 11 YEARS)
FORMAL OPERATIONAL
(11 YEARS - UP)
- Diferentiales self from object
- Recognise y act intenationally
- - Achieve object permanenece
- Lern to use language and represent
- Thinking is egocentric.
- Clasifies objects by a single feature
- Think logically about objects .
- Achieve conservation of numbers
- Clasifies objects acording features
- Think logically about abstract
propositions and test hypotheses.
- Cocerned with hypothetical, the
future and ideological problems
The role of maturation in
children’s increasing capacity
studied