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Gresham College
The Secret behind the Codes we find in everyday life - John D. Barrow Gresham College Maths lecture
We meet mathematical codes at every part of our everyday lives - in our mobile phones, on the sides of books, on our credit cards, in barcodes - but what is the maths that underlies all of these? In this extract from his lecture on...
Gresham College
Mathematical Codes in our Everyday Lives: An Introduction, by Gresham Professor John D Barrow
Simple mathematics is all around us in our everyday lives. In the case of codes, the simple pure mathematics behind it is fascinating and surprising. In this extract from his lecture on 'Codebreaking in Everyday Life', John D. Barrow,...
Gresham College
The maths behind ISBN numbers: Breaking the codes in our everyday lives - John D Barrow
What is the mathematical secret behind the barcodes we find on our books? How does it self-check for mistakes? In this extract from his lecture on 'Codebreaking in Everyday Life', John D. Barrow, Gresham Professor of Geometry and...
Gresham College
Erdos Numbers: A mathematical example of 'small world' networks - John Barrow Gresham maths lecture
Paul Erdos, the wandering Hungarian mathematical genuis, would travel from university campus to university campus collaborating in mathematical papers with colleagues all around the world. This created a network of connections that...
Gresham College
The Maths Behind Barcodes: John D Barrow Gresham College maths lecture
We see barcodes everywhere in our everyday lives, but what is the mathematical code that underlies them? Why is it there and what is it good for? In this extract from his lecture on 'Codebreaking in Everyday Life', John D. Barrow,...
Gresham College
Credit Cards - Breaking the Code: The maths behind bank numbers and the Luhn test
Why are some bank numbers correct and some incorrect? What makes a good number for a credit card, and why? In this extract from his lecture on 'Codebreaking in Everyday Life', John D. Barrow, Gresham Professor of Geometry and Professor...
Gresham College
Mathematical Problems with Names: The Soundex Phonetic System - John Barrow Gresham lecture
How is a simple mathematical code used to ensure that mistakes are avoided with names? What is the maths behind computer systems being able to account for variant spellings such as 'Smith' and Smyth'? In this extract from his lecture on...
Gresham College
Mobile Phone IMEI Numbers: What are they and how do they work? - Gresham College maths lecture
Every mobile phone has a unique reference number to ensure that it's not stolen. But what are these IMEI numbers and how do they work? In this extract from his lecture on Codebreaking in Everyday Life, John D. Barrow, Gresham Professor...
Gresham College
The Maths Behind Postcodes: Are there enough to go round? - John D Barrow Gresham College lecture
How many postcodes can there possibly be? Is it enough? In this extract from his lecture on 'Codebreaking in Everyday Life', John D. Barrow, Gresham Professor of Geometry and Professor of Mathematical Science at the University of...
Gresham College
The maths behind international banking codes (IBAN's) - John D. Barrow Gresham College Maths lecture
In an area where it's essential that mistakes don't arise, how do they ensure that the codes for international banking are correct? How is maths at the centre of the way our banking transactions work? In this extract from his lecture on...
Curated Video
What are rectangles? | Quadrilaterals For Kids
Ready for a cool journey into the world of Rectangles? 🤓📐
Join us in this video to explore rectangles – those four-sided shapes where opposite sides are equal, and all angles are right angles. But hold up, rectangles aren't...
Join us in this video to explore rectangles – those four-sided shapes where opposite sides are equal, and all angles are right angles. But hold up, rectangles aren't...
KnowMo
Constructing Perpendicular and Bisecting Lines
The video is a lecture presentation that demonstrates how to bisect a line and create a perpendicular line, using a pair of compasses and a ruler. The video covers three key elements: how to create a perpendicular bisector of a line, how...
National Education Association
Use Coordinate Geometry to Represent and/or Solve Problems
A geometry video explains how to solve for midpoint, length of a line, and use the Pythagorean Theorem. It includes multiple guided practice problems for all three equations.
Curated OER
Right Angles
This episode of Kung Fu Math reviews what a right angle is and where it can be found in everyday life. The right angle is compared to particularly strong moves found in martial arts. This is a very interesting clip which clearly...