Question

Rochelle has a glass of Kool-Aid. She pours her Kool-Aid into a toy teacup, and then she pours the Kool-Aid from the teacup into a beer stein. She then pours it from the beer stein back into the original glass. She knows the amount of Kool-Aid has not substantially changed. What does this exemplify?

Answer 1

Reversibility

Step-by-step explanation:

Answer 2

Liquid conservation

Step-by-step explanation:

Jean Piaget proposed, as part of his cognitive development theory, that around ages 7 to 11, children develop the idea of "conservation"

This concept refers to the thinking ability that allows a person to know that a certain quantity of liquid or mass will remain the same despite being changed of container, shape, or apparent size.

In this example, Rochelle has a glass of Kool-Aid, she pours it into a different container (a teacup) and then into a beer stein and then into the original glass. Younger children would think that the teacup has less liquid (since it's smaller) and that a significant amount of liquid is lost while doing all this changes from recipient to recipient.

However, Rochelle knows that this quantity of Kool-Aid remained the same despite being changed of container, thus, this is an example of liquid conservation.