# Circles and More Circles

## We've gathered a number of resources that you can use on π Day.

Visit the Roman Coliseum to learn how circles played a role in the construction of this ancient structure.

Click on the image to see the Media4Math activity.

Visit the Roman Pantheon to continue the exploration of circular structures.

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### Pumpkin Pi

A hands-on activity that has students explore the ratio of circumference to diameter. Click on the image to see the Media4Math activity.

### Why Do Rivers Meander?

In this Media4Math Classroom module, explore the mathematics behind meandering rivers, specifically a ratio that involves π.

Click on the image to see the Media4Math activity.

### Applications of Linear Functions: Circumference vs. Diameter.

In this Media4Math Classroom module, explore the relationship between circumference and diameter.

Click on the image to see the Media4Math activity.

### Circular Structures

In this Media4Math Classroom module, explore properties of circles in the context of the Roman Coliseum.

Click on the image to see the Media4Math activity.

### Measuring the Area of a Polygon

Construct the Incircle and apothem of a regular polygon to measure the area of the polygon. TI graphing calculator activity.

Click on the image to see the Media4Math activity.

### Exploring the Ratio of Circumference to Radius A a Linear Function

In this activity from our Algebra Nspirations series, explore the ratio of circumference to radius using the TI-Nspire.

Click on the image to see the Media4Math activity.

### Exploring the Ratio of Circumference to Radius as a Linear Function

In this TI-Nspire Activity, use the Geometry and Graphing Tools to explore the ratio of Circumference to Radius as a linear function

Click on the image to see the Media4Math activity.