alleryArranging sticks in order from shortest to longest is called:
ASeriation
BClassification
CConservation
DCentration
Answer & Solution
Correct answer: A. Seriation
1. Ordering items along a dimension such as length or weight is **seriation**.
2. Concrete operational children do it methodically.
3. Younger children tend to do it in a haphazard way.
**Why not the others:** Classification groups items into classes; it does not put them in order along a dimension.
_Source: Wikipedia, "Piaget's theory of cognitive development", section "Testing for concrete operations" (revision 1379038101)_
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