Jackie and her twin, Jill, are served hot dogs for lunch.Each receives one hot dog, and their mother first helps cut Jackie's hot dog into pieces.Jill is upset and says that Jackie has more hot dog than she does.This illustrates that Jill has not yet mastered:

Question

Quizplus · Accepted Answer

This situation reflects a lack of understanding of conservation, which is the ability to recognize that altering the appearance of an object does not change its basic properties, such as quantity or volume. Jill only looks at the visual appearance of the hot dog, rather than realizing that the amount of hot dog each of them has received is equal.

Jackie and Her Twin, Jill, Are Served Hot Dogs for Lunch.Each