In this session, we will explore the common measures that involve circles -- circumference and area -- and work on activities that help us understand the formulas for these measures. We will also revisit accuracy, precision, and scale in relation to circles. Finally, we will explore how properties of the irrational number pi () affect calculations of circumference and area.

For information on required and/or optional materilas for this session, see Note 1

Part A:	Circles and Circumference
Part B:	Area of a Circle
Homework

In this session, you will do the following:

Investigate circumference and area of a circle

Understand the formulas for these measures

Learn how features of the irrational number affect both circumference and area

Throughout the session you will be prompted to view short video segments. In addition to these excerpts, you may choose to watch the full-length video of this session.

Previously Introduced:

New in This Session:

accuracy
area
precision
scale factor
similar figures

circumference
diameter
irrational number
perimeter
pi ()

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