**Learn all about Pi and why it is important (and fun!)**

Visit the Pi Day page for more Pi resources.

**Please respect the work we have put into this unit study by not redistributing it.** Instead, please direct friends to this page where they can download a copy. You can download the full unit in PFD form, or use the web version found on this page. Enjoy!

**Pi Day**

- What is Pi Day?
- When is Pi day celebrated?
- Where was the first Pi day held?
- Give a brief history of Pi day.

**What is Pi?**

- Give a brief history of Pi.
- List three people who are credited with calculating Pi? Find out other math concepts for which those people are famous.
- Look around your environment. Find three things that contain Pi.

Select one of your items from the above list. Why might it be important to know Pi for this item? List the item and give an example of why Pi is important to this item.

**Making Pi Personal**

- How old are you?
- Write Pi out to the same number of decimal places as your age. Memorize this number. Each year you can add a number. In fifty years, what will your Pi number look like?

**Some Pi Fun**

Pi and pie rhyme. Words that sound the same but are spelled different are called ________________.

What is the symbol for Pi?

In the alphabet of which language is the letter Pi found?

Write the alphabet of that language. Pi has been filled in for you.

Find out how to count from zero to nine in this language.

Write out Pi in this language out to ten decimal places.

List your three favorite dessert pies.

List three types of pies that are NOT dessert pies.

**Make a Pie for Pi Day**

- To celebrate Pi Day, which pie listed that you listed would you most like to make?
- Create a recipe card for the pie you have chosen to make. If you do not have a personal recipe collection, this can be your first recipe in your collection. You can use a recipe box, a three ring binder with page protectors, or any other method you choose to store your recipes. Having a personal collection of tried and true recipes is something that you will appreciate when you are on your own and must feed yourself and possibly others too!
- Write out your recipe card. After it is complete, make a grocery list with enough ingredients to make
**two**pies. Since most pie recipes only make one pie, you will need to double your ingredients to make two pies. Plan a time with your parent(s) to shop for the needed ingredients and make the pies. Never cook without your parents’ permission! Share the extra pie with a friend or neighbor to introduce them to Pi Day. - When your pies are made, take a picture of the prettiest one and paste it in your unit study report. You can store the photo with the recipe if you like to have pictures with your recipes. Pasting a copy of the picture on the back of the recipe card is a good way to keep them together.

**Pi Activities**

**Door Banner:** Make a Pi chain banner to hang up on your door. Using strips of construction paper make a paper chain using ten different colors. Make sure to assign a different color paper to each of the 0 through 9 numbers contained in Pi. Make it as long or as short as you like, but be sure to use all ten colors.

**Bracelet:** Make a Pi bracelet or key chain. Using your choice of string and colored beads, assign a different colored bead to each of the 0 through 9 numbers contained in Pi and string them in the correct order. Wear your bracelet proudly and try quizzing your friends on the meaning of the color combination.

**Writing Pi:** Make up a Pi poem, Haiku, or limerick.

**Web Activities**

Play a Pi tune: http://www.avoision.com/experiments/pi10k/index.php

See Pi demonstrated on a rolling circle: http://commons.wikimedia.org/wiki/File:Pi-unrolled_slow.gif

Emporium celebration: http://www.exploratorium.edu/pi/

Send a Pi card: http://www.123greetings.com/events/pi_day/

Check out Pi to a million digits – take the Pi challenge. Add an additional number on your memorization of Pi each year. By the time you are 40, you will definitely impress those around you. http://www.cecm.sfu.ca/organics/papers/borwein/paper/html/local/billdigits.html