30
/ru/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
3810754
350612
2

17 янв 1950 г. - Piaget defined four stages of development in children: the sensorimotor stage, the preoperational stage, the concrete operational stage and the formal operation stage.

Добавлено на ленту времени:

Дата:

17 янв 1950 г.
Сейчас
~ 74 г назад