In the later years of the preoperational stage, children show an understanding that certain things stay the same, regardless of changes in shape, size, and appearance. This is called .

Conservation

Explanation:

Conservation is one of Piaget Cognitive Stages of Development. This happens around 2 to 7 years. This means that a substance will remain as it is inspite of it changing color or shape. For example, 30 ml of juice will still be the same amount even in a small cup or a large basin.

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