Ten-year-old Sherry watches as you flatten one of two equal-sized balls of clay into a pancake. Sherry says they both still have the same amount of clay, demonstrating that she understands

Question

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Sherry's statement demonstrates that she understands the concept of conservation, which is the understanding that the quantity of a substance remains the same even when its appearance changes. In this case, Sherry understands that even though one ball of clay has been flattened into a pancake, it still contains the same amount of clay as the other ball.

Ten-Year-Old Sherry Watches as You Flatten One of Two Equal-Sized