2. Neuchâtel

3. 1918
Binet) Simon)
Norm)
1919 1921
3

4. Assimilation)
Accommodation)

6. -

7. .
Centration)
Ego Centrism)
5. Seriation)
Reversibility)
-
Conservation)
Status)
Transformation)

8. -

9. Formal
Operation Stage or
Period of Formal
Operation)

10. 

2

11. physical experiences)
Logicomathematical
experiences)

12. --
--
--
--
-- cognitive conflict activities)