## Student Learning Targets

**Habit 2**: I can reason abstractly and quantitatively.**Habit 6**: I attend to precision.**Habit 7**: I look for and can make use of structures and patterns.**Circles 1**: I understand the derivation for the equation of a circle on the coordinate plane.**Circles 2**: I can derive the value of pi, and I understand the development of this number from a historical perspective.

## Opener

# What is Pi?

**Think about your last six years of math education. Write your current definition of Pi on a post-it note. Keep in mind how ***precise *you are being when you write your definition.

*precise*you are being when you write your definition.

## Circles Exercises

## Here is a 2,200 year old definition of pi.

## Assignments

- Problem Set 8
- Delta Math

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