Anjanie and sophie are having a disagreement in class. anjanie says that sophie borrowed a pencil without returning it, but sophie insists that it was a gift and that she should not have to return it. if her teacher is familiar with the "retribution versus restitution" research that updates piaget's moral values, what should she do

I believe the answer is: Let the students in the class all discuss the situation and decide the fairest outcome.
In this context, children need to realize the roles of the value that influence whether social groups perceive a certain action as 'right' or 'wrong'.
To fully do this, the teacher has to include all children in analyzing this matter so they can achieve a similar moral standard that would be imposed within their social group.