**By Lindsay Roseberry, Reference Department**

A fraction represents a part of a whole or, more generally, any number of equal parts, describing how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters. A simple fraction consists of an integer numerator, displayed above a line (or before a slash), and a non-zero integer denominator, displayed below (or after) that line.

Want to celebrate π Approximation Day?

Eat pie, any kind will do. See how many slices you can make. Try another mathematical problem of how to get the first slice out without making a mess. This will take much experimentation!

Or eat something round if you don’t like pie. Pizza anyone??

(501.1 CHE)*How to Bake Pi: An Edible Exploration of the Mathematics of Mathematics*(004.165 COO)*Raspberry Pi for dummies*(J 004.1675 PHI, at Bethesda Branch)*Adventures in Raspberry Pi*(J 004.165 WEN)*Raspberry Pi for Kids for Dummies*(J 530.8 BAL)*Why Pi?*

**Sources:**

- http://mathematicianspictures.com/PI/CASUAL_PI.htm for images!
- http://www.jagranjosh.com/current-affairs/pi-approximation-day-celebrated-on-22-july-worldwide1374478569-1
- http://piapproximationday.com/ nifty poem
- http://www.exploratorium.edu/pi/history_of_pi/index.html