In this section students should recognize the relation of proportionality between the two dispersions of the same system in two different domains. They should also be able to fill the Form and to give a first rough statement about this relation.

The teacher will collect information from the Form and will help the class to reach a common and correct formulation of the link between two quantities.

The teacher will also underline that the statement involves dispersions of the same system ( a sound) in time and frequency. Nothing more, Nothing less.

As a final step for this section the teacher can call the explored relation "Uncertainty Principle in time and Frequency".