Piaget was a Swiss psychologist who developed a theory of cognitive development in children. His theory proposed that children progress through four distinct stages of development, during which their understanding of the world grows from concrete experiences to abstract logical thought. Piaget's theory was inspired by his observations of his own children and experiments studying how they learn and think at different ages. He believed cognitive development was the most important aspect of child development.

2. August 9, 1896- September 16, 1980
He showed a clear interest in science
and by the age of 11 he wrote a short
paper about an albino sparrow.
Piaget received his Ph.D. in Zoology
from University of Neuchâtel in 1918.
He started his studies in psichology in
1919.
His children were the main source of
inspiration for his theories.
Biography

3. Piaget declares that the most important thing in
children´s development is the cognitive one.
This development is built by different stages.
In each one of these stages the person understands
reality in a different way and completes it with what
he has learnt in the previous stages.
STAGES’ THEORY

4. Piaget’s experiments
Piaget's Stages of Development - YouTube

5. The more you build your knowledge, the more you
are able to think and rationalize your thoughts.
TO SUM UP