Failure to understand that undoing a sequence of events will ...

[kodithompson]

Failure to understand that undoing a sequence of events will bring about the original conditions or situation is called
 
  concrete operations.
  conservation.
  irreversibility.
  symbolic thought.

Question 2

Romy understands that if she has 4 pieces of pizza and we give her 2 more, she will have 6. However, she does not know what happens if she has 6 and we take away 2. Piaget would say that Romy
 
  has demonstrated the concept of irreversibility.
  has exhibited centration.
  is thinking in a static way.
  has demonstrated a scaffold.

[dreamfighter72]

Answer to Question 1

irreversibility.

Answer to Question 2

has demonstrated the concept of irreversibility.

[kodithompson]

Gracias!

[patma1981]

Thanks for the timely response, appreciate it