## Introduction

**Pi Day**

π, sometimes written as Pi, is a mathematical constant that is roughly equal to 3.14159.... Pi Day is observed on March 14 each year by mathematicians all over the world. You have been chosen to participate in online activities to learn about the meaning of Pi and to celebrate Pi Day.

## Task

*Task*

You will need to review several lessons on circumference and area of circles to prepare for these explorations. After that, you will do a web-based investigation on the meaning and history of Pi, as well as calculations involving Pi. You will also learn about Pi Day's history and how it is commemorated. After that, you can participate in online activities of your choice to commemorate Pi Day. There are resources on Pi and Pi Day, as well as links to them. These tasks will require the use of a computer, internet connectivity, paper and pencil/pen.

## Process

* Process Part I*: Learning about Pi

- Read the unit on circumference and area of circles. https://www.bbc.co.uk/bitesize/guides/ztndmp3/revision/6
- Complete the exercises at the end of each lesson of the unit.
- Try out the interactive Circle Puzzles with buttons and timers. https://www.mathgoodies.com/puzzles/crosswords/icircle1
- Visit Pi Day, the official website for Pi Day. https://www.piday.org/

* Part II*: Learning about the meaning and the history of Pi

- What relationship is there between the symbol π and the word Pi?
- What ratio does the value of pi come from?
- Why is Pi referred to as a mathematical constant?

* Part III*: Learning about Pi Day

- Why is March 14 the day of celebration for Pi Day?
- How many years have Pi Day been celebrated?
- Who tried to find the first calculation of Pi?

* Part IV*: Celebrating Pi Day

Participate in online activities to commemorate Pi Day for a few hours. You can select activities from the list of suggested sites below.

- The Joy of Pi. https://www.joyofpi.com/
- Pi Day. https://www.piday.org/
- Visualizing Pi. https://visual.ly/community/Infographics/education/visualizing-pi

## Evaluation

- Immediately note feedback in the exercises from each completed lesson.
- View solutions to the puzzles and activities.
- In your math book, write about Pi and Pi Day.
- By means of a song, an image, a poem, or a poster, create your own Pi Day activity.

## Conclusion

**CONGRATUALATIONS! **You have learned about Pi's origins and meaning. You also learned about Pi Day and celebrated it by participating in online activities.