Cole watches his mother pour milk from a small glass into a taller glass.Then she pours it back.Cole not only realizes that the amount of milk didn't change as she poured it from one glass to the other,it stayed the same when she poured it back.According to Piaget,Cole must be at least between the ages of:

Question

Quizplus · Accepted Answer

Cole's understanding that the amount of milk remains the same despite the change in the container's shape indicates that he has developed conservation, a concept mastered in the concrete operational stage, which occurs between the ages of seven to eleven years according to Piaget's stages of cognitive development.

Cole Watches His Mother Pour Milk from a Small Glass