Seven-year-old Jerusha is always upset when her older brother is given two slices of pizza but she gets only one.Until recently,Jerusha's mother could make her happy by cutting her pizza slice in half so that she now had two,but Jerusha has come to realize that cutting one slice in half isn't the same as getting two slices that are each the size of her brother's.Jerusha now understands
A) sensory operations.
B) concrete operations.
C) conservation.
D) object permanence.

Question

Quizplus · Accepted Answer

Jerusha's realization that one slice of pizza cut in half is not the same as two full slices demonstrates an understanding of conservation, which is the ability to recognize that the amount of a substance remains the same despite changes in its shape or arrangement. This is a key concept in Piaget's theory of cognitive development and typically emerges during the concrete operational stage (around 7-12 years old). Sensory operations and object permanence are earlier developmental stages, while none of the options fully capture Jerusha's emerging understanding of quantity and measurement.

Seven-Year-Old Jerusha Is Always Upset When Her Older Brother Is