Even though research has shown that young children can understand ...

[vinney12]

Even though research has shown that young children can understand many of Piaget's concrete operations, which of the following is a correct statement regarding the differences in thinking between a 4-year-old and a 9-year-old?
 
  The 4-year-old has the ability to separate the relevant from the irrelevant.
  The 9-year-old has the ability to apply abstract thought to the classification
  process.
  The 4-year-old will be able to distinguish between relevance and flexibility.
  The 9-year-old has the ability to be both precise and flexible in
  classification.

Question 2

Identify the statement that demonstrates the principle of reversibility.
 
  Addition can be used to undo subtraction.
  There is still only one pizza regardless of how many slices we make.
  The teenager in the photograph is Grandpa.
  A frog was once a tadpole.

[matt95]

Answer to Question 1

The 9-year-old has the ability to be both precise and flexible in
classification.

Answer to Question 2

Addition can be used to undo subtraction.