In the above situation, the lack of effect of the different ...

[FButt]

In the above situation, the lack of effect of the different arrangements of the pennies on the total number is referred to as the ___________________ _______ in the psychological structure of the operation.
 
  Fill in the blank(s) with correct word

Question 2

One of the reasons given by the child that the number in the circle is the same as it was in the row is that the circle can be returned to a row of pennies. This reason is evidence of what important characteristic of operational thinking? _______________.
 
  Fill in the blank(s) with correct word

[Moriaki]

Answer to Question 1

constant

Answer to Question 2

reversibility

[FButt]

Thank you

[Moriaki]

No problem