Celebrating Pi day with one more compilation of videos dedicated to it. Prof James Grime features in this Numberphile video titled Pi is beautiful.

In this video Prof Grime shares a true story madness of how pi was almost certainly changed to 3.2!

The ratio of a circle's circumference to its diameter is always the same: 3.14159... and on and on (literally!) forever. This irrational number, pi, has an infinite number of digits, so we'll never figure out its exact value no matter how close we seem to get. Reynaldo Lopes explains pi's vast applications to the study of music, financial models, and even the density of the universe.

Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or disrupt a sacred ritual? No, Hippasus's transgression was mathematically proving the hitherto unprovable. Ganesh Pai describes the history and math behind irrational numbers in this TED Ed lesson. 

Here are some activities we compiled it for you that introduce & explore the beauty & universality of pi. Try this today, and celebrate World Pi Day.

1. Take any circlular of your choice. Draw 4 of them next to each other as shown. 

Pi - the irrational, nevertheless mathematical, constant and “celebrity number” (as Alex Bellows puts it) is an intriguing & insπring number that has enthralled mathematicians for centuries.
How can I show this to the uninitiated?

..and other rational approximations to π

In this article, the writer will explain a method to find rational approximations for and other irrational numbers. The key idea here is to use a calculator to find what is called a continued fraction for an irrational number.

A poem on the imaginary number i by Punya Mishra

Read about Numberphile - a website where you will find videos about numbers and other stuff, reviewed by Rajkishore Patnaik.

The aim of these worksheets is to introduce students to various concepts in geometry using leading questions. No formal proofs are provided but by the times students complete each worksheet, they can arrive at deductions that set the stage for a formal proof. These worksheets can be used by students who want to explore the subject further on their own or by teachers who want to introduce or review these concepts in class.

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