Quotable maths: Roberts Sep 6, 2012 A selection of other posts Nov 21, 2016 Wrong, But Useful: Episode 38 Oct 26, 2016 Ask Uncle Colin: how to do moments questions? Jan 9, 2013 How to think about co-ordinate geometry (Part II: curves, tangents and normals) Jan 13, 2012 Free-for-all Friday subscribe via RSS