![Jean Piaget on Twitter: "Me casé en 1923 con Valentine Châtenay. Y tuve 3 hijos:Lucienne,Laurent y Jacqueline (los estudie desde su infancia) http://t.co/MGBSwf7GRI" / Twitter Jean Piaget on Twitter: "Me casé en 1923 con Valentine Châtenay. Y tuve 3 hijos:Lucienne,Laurent y Jacqueline (los estudie desde su infancia) http://t.co/MGBSwf7GRI" / Twitter](https://pbs.twimg.com/media/COtawndVAAAg1qF.jpg)
Jean Piaget on Twitter: "Me casé en 1923 con Valentine Châtenay. Y tuve 3 hijos:Lucienne,Laurent y Jacqueline (los estudie desde su infancia) http://t.co/MGBSwf7GRI" / Twitter
![Jean Piaget on Twitter: "With my wife, Valentine Châtenay and my three lovely children, Jacqueline, Lucienne and Laurent. https://t.co/Vklr6kpKUC" / Twitter Jean Piaget on Twitter: "With my wife, Valentine Châtenay and my three lovely children, Jacqueline, Lucienne and Laurent. https://t.co/Vklr6kpKUC" / Twitter](https://pbs.twimg.com/media/EEHNI_1VAAAYkw_.jpg)
Jean Piaget on Twitter: "With my wife, Valentine Châtenay and my three lovely children, Jacqueline, Lucienne and Laurent. https://t.co/Vklr6kpKUC" / Twitter
![PIAGET'S THEORY OF COGNITIVE DEVELOPMENT. Jean Piaget ( ) : History Born: August 9, 1896, Switzerland Died: September 16,1980 (Age 84) Parents: - ppt download PIAGET'S THEORY OF COGNITIVE DEVELOPMENT. Jean Piaget ( ) : History Born: August 9, 1896, Switzerland Died: September 16,1980 (Age 84) Parents: - ppt download](https://images.slideplayer.com/117/18123797/slides/slide_2.jpg)