## Debrief

Deconstruct the experience. What are the three acts of this story? What were the teacher moves? How is it different than the same kind of problem in a textbook?

“The basic modeling cycle is summarized in the diagram. It involves:

(1) identifying variables in the situation and selecting those that represent essential features,

(2) formulating a model by creating and selecting geometric, graphical, tabular, algebraic, or statistical representations that describe relationships between the variables,

(3) analyzing and performing operations on these relationships to draw conclusions,

(4) interpreting the results of the mathematics in terms of the original situation,

(5) validating the conclusions by comparing them with the situation, and then either improving the model or, if it is acceptable,

(6) reporting on the conclusions and the reasoning behind them.”

## Secret Skepticism Survey

Whenever I’m sitting in your seat, sitting through some kind of professional development, I often feel a burning, secret skepticism, something that I keep to myself. I’m inviting you here to make that skepticism or question known (anonymously) to the rest of us.

## Homework

- Email a photo or a video that’s less than one minute long to dan@mrmeyer.com that you think will provoke a lot of questions. Deadline is 9PM tonight.
- Take the end-of-the-day survey.

Homework Rubric

- +1 – It generates a question.
- +1 – That question is guessable.
- +1 – Answering the question requires more information.
- +1 – The answer can be validated.

## Barbie Bungee

After watching the Teaching Channel video and reviewing these five handouts, what are ways the Barbie Bungee project can go wrong and how can you make sure it goes right?