## Listing all results (220)

### Volume: Counting Stars

This video, from Twig World, begins by asking how do astronomers estimate the number of stars in the night sky. To explain how it is done, a method of calculating the number of grains of sand on a beach is shown. The same principles are used to estimate the number of stars in the sky.

The video is...

### The Cutting a Person in Half Trick

In the video Matt Parker presents the laziest cutting a person in half trick using a strip of paper. The strip of paper is used to create a Mobiüs loop which is then cut in half lengthways with surprising results. The ‘trick’ is then explained by exploring the properties of the Mobiüs loop. As a finalé Matt cuts...

### Arthur Benjamin: the Magic of Fibonacci Numbers

In this video, courtesy of TED, Arthur Benjamin asks the question why do we teach mathematics in school? He suggests that the reasons are for calculation, application and to a lesser extent inspiration. The Fibonacci numbers are explored as an example of how mathematics can be inspirational and not just studied...

### Terry Moore: Why Is X the Unknown?

In this video, courtesy of TED, Terry Moore asks the question: "Why is 'x' the unknown?" To attempt to answer this question the origins of a mathematical word is traced back to its roots in Arabic, the translation into Spanish and then into Latin. It turns out that the letter 'x' is used for the unknown because...

### Robert Lang: the Maths and Magic of Origami

In this video, courtesy of TED, Robert Lang explores the links between mathematics and origami. Beginning by exploring the origins of origami and how it is perceived today, Robert explains how origami has developed through the application of mathematics and four simple laws.

It is shown that the...

### Arthur Benjamin Does Mathemagic

In this video, courtesy of TED, Arthur Benjamin performs amazing feats of 'mathemagic'. Beginning by multiplying two 2 digit numbers he continues by mentally squaring two digit numbers and three digit numbers more quickly that the calculations can be performed using a calculator.

The performance...

### Marcus Du Sautoy: Symmetry Reality's Riddle

In this video, courtesy of TED, Marcus du Sautoy tells the story of Évariste Galois' work in the mathematical area of symmetry. The language of symmetry holds the key to understanding in a number of scientific area such as molecular structure and microbiology.

The story continues by looking at the...

### Benoit Mandelbrot: Fractals the Art of Roughness

In this video, courtesy of TED, Benoit Mandlebrot talks about fractals. Beginning by looking at a cauliflower, how each floret is an exact replica of the whole cauliflower, but smaller. By considering the surface area of the cauliflower, the conversation moves on to describe what is termed as the 'roughness' of a...

### Scott Kim Takes Apart the Art of Puzzles

In this video, courtesy of TED, Scott Kim, puzzle designer, takes a tour through the story of designing puzzles. A puzzle is a well designed problem that has a right answer and is fun to solve. Being able to create puzzles has applications in computing and the principles involved in solving puzzles can be used...

### Adam Spencer: Why I Fell in Love with Monster Prime Numbers

In this video, courtesy of TED, Adam Spencer describes his love of mathematics and takes a humorous look at the topic of prime numbers and in particular looks at the largest prime number known which is over 17000 digits long.

Adam explains how computers have sped up the search for primes, analyse data...