In order to understand that a ball of clay can take a different shape without either losing or gaining substance, which of Piaget's stages must the child have reached?

Correct answer: D. concrete-operational

  • A. sensorimotor
  • B. preoperational
  • C. formal operational
  • D. concrete-operational

Explanation

Conservation of substance develops in Piaget’s concrete-operational stage, when children understand that changing an object’s appearance does not change its amount. Preoperational children are commonly misled by the new shape.

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