Everyday Maths
The Mobius Loop Rollercoaster 3 June 13
Blackpool's Grand National rollercoaster is described as a Mobius Loop, yet you never go upside down. How?
King Richard III 10 May 13
Fifteen 'descendants' of Richard III want a say in where he is buried. What about the rest of us?
How much does it cost to cross the road? 15 March 13
Innocently pressing the button at a pedestrian crossing brings several cars to a halt. What's it cost in wasted petrol?
The Lincoln Index 25 February 13
The Lincoln Index is nothing to do with predicting Oscar winners, but is in fact a neat way of estimating how mistakes there are in a book after proof-reading it.
Introducing…ZEQUALS 18 February 13
The government wants ten year old children to be able to do long division calculations such as 8384 / 27. That might take a less able ten year old almost half a lesson to work out. Much better to have a way of coming up with a good estimate of the right answer – which is where Zequals comes in.
"JURASSIC PARK AND FRACTALS" 6 February 13
Last week, Brady Haran brought a camera to my house and filmed three items for his Youtube channel Numberphile. The first of these went up on Youtube this week.