List by Author: Yutaka Nishiyama
Don't like trigonometry? Don't worry, here are three beautiful proofs of a wellknown result that make do without it.
Imagine a circle with radius 1 cm rolling completely along the circumference of a circle with radius 4 cm. How many rotations did the smaller circle make? Be prepared for a surprise!
The number 1 can be written as a sum of unit fractions, that is fractions with 1 in the numerator. But how long can we make such a sum?

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.
Count down to Christmas with maths!
Where do the magnetic fields of planets and stars come from?
 In this podcast Paul Shepherd tells us about the maths of football stadiums and why his work required him to listen to Belgian techno.
Amidst all the controversy of the FIFA World Cup 2022 there is also some football to be played. And where there's football, there's maths...
Tosin uses maths to guarantee the continued production of chocolate.