Prepare for the Presentation:
Find an article or book about a topic that you are interested in, perhaps even passionate about, that includes a mathematical model.  

Read the piece and consider how the model is used and how well, or poorly, it is used.

This model may be in any of the three representations we have discussed

graph
data table of ordered pairs, or
formula.
Present on

The source of the article.
The topic:  summarize the authors point in writing the article.
State (provide Gretchen with a slide ahead of time, due 4/30) the original model
Describe how it was used.
Critique how the model was used.
Anything else you found helpful, surprising, or interesting.