Mathematicians and number lovers worldwide will come together on March 14th to celebrate National Pi Day, a celebration of the world's most popular mathematical constant. Pi is the ratio of a circle's circumference to its diameter and while it goes on infinitely, we most often round it off to 3.14. National Pi Day also happens to be the birthday of physicist Albert Einstein. So whether you like mathematics, physics, or Albert Einstein, or if you just need an excuse to eat pie, March 14th is your day! With so many ways to celebrate, check out some of these picks from our catalog.

Learn more about Pi:

• [Pi]: A Biography of the World's Most Mysterious Number
• The Joy of [Pi]
• A History of [Pi]
• A History of the Circle: Mathematical Reasoning and the Physical Universe

Learn more about Albert Einstein:

• Albert Einstein: A Life of Genius
• Einstein For Beginners
• The Private Albert Einstein

Learn how to make a pie to celebrate Pi Day:

• Pie Pie Pie: Easy Homemade Favorites
• Pie It Forward: Pies, Tarts, Tortes, Galettes & Other Pastries Reinvented

Author Bio:

Brighid Gonzales is a Brisbane Library intern and likes math okay but likes pie a lot.