alleryA child knows that if 2 + 3 = 5 then 5 - 3 = 2. Which skill does this show?
AClassification
BCentration
CReversibility
DEgocentrism
Answer & Solution
Correct answer: C. Reversibility
1. The child undoes the addition by subtracting.
2. Knowing a change can be returned to its start is reversibility.
3. Classification is sorting into classes, and centration is a limit, not a skill.
_Source: Wikipedia, Piaget's theory of cognitive development, Testing for concrete operations_
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