Pi Chart 

An eye chart for math geeks, with the digits of the number π and some math symbols on display rather than showing any of the 26 letters of the English alphabet and the ten numerals.

Doctors at some elite colleges are giving students who come for their medical check-up the option to choose between a pi chart and the eye chart that is commonly used in spectacles shops and hospitals.

Pi Chart by Activity July 1, 2020

Pi Chart 

A bar chart whose adjacent vertical bars have heights proportionately based on the digits of the decimal number π—from a distance, the statistical diagram looks like a city skyline.

On a graph paper, what is the most number of bars you can draw for a pi chart?

Pi Chart by MathPlus November 4, 2021