As children watched,Dr.Vallance poured the same amount of juice into two identical glasses.Then she poured the juice from one of those glasses into a taller,narrower glass.When asked which glass now has more juice,children in the concrete operational stage say that:
A)the tall glass has more.
B)both glasses have the same amount.
C)they don't know.
D)the tall glass has less.

Question

Quizplus · Accepted Answer

Children in the concrete operational stage (ages 7 to 11) understand the concept of conservation, meaning they know that the quantity of juice remains the same despite its appearance in a different shaped container.

As Children Watched,Dr