PUPILS at a Keighley school got to grips with some extremely long numbers as part of a day celebrating the mathematical constant – Pi.

The students of all ages at University Academy Keighley (UAK) worked together to produce Pi number paper chains, helping them visualise the longest number they could come up with.

A UAK spokesman said: “The paper chains were all measured in the sports hall, with the winning chain stretching across the hall three times!”

“Pi Day is celebrated on March 14 around the world. Pi is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its diameter – which is approximately 3.14159.

“Pi has been calculated to over one trillion digits beyond its decimal point. While only a handful of digits are needed for typical calculations, Pi’s infinite nature makes it a fun challenge to memorise, and to calculate more and more digits.

“UAK students also worked on Pi themed games and activities during their maths lessons throughout the day.

“This was part of a series of activities that have taken place at the Academy this term, focusing on literacy and numeracy.

“Earlier in the month, our students celebrated World Book Day, where student leaders organised a book swap, a year seven spelling bee competition and a character quiz.

“Members of staff also arrived at work dressed as their favourite story book characters.”