Children in the stage of concrete operations have typically mastered what Piaget called "conservation."

Question

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Children in the stage of concrete operations have typically mastered the concept of conservation, which is the understanding that certain physical characteristics of objects (such as their quantity, mass, and volume) remain the same even when their outward appearance changes. Piaget pointed out that children typically begin to develop this ability around the age of 7 or 8.

Children in the Stage of Concrete Operations Have Typically Mastered