Quotable maths: Lehrer Jul 12, 2012 A selection of other posts Oct 23, 2018 Wrong, But Useful: Episode 61 Oct 21, 2015 Ask Uncle Colin: an integral that's giving me a headache Jul 20, 2012 Silly questions amnesty Jun 25, 2012 The secrets of the mathematical ninja: converting awkward fractions to decimals. subscribe via RSS