Our challenge was to view the model for 2 minutes, afterwhich we were asked to
list several descriptive traitsof the model. These were listed on the board. The model
returned for another 2 minutes and more descriptions were added.
Then, based on the attendees descriptions, the instructor started to draw a
preliminary sketch of the model. It is a good exerecise to discover what you overlook
when observing the figure.
