Quotable maths - Adams Jun 14, 2012 A selection of other posts Aug 21, 2018 Wrong, But Useful: Episode 59 Jan 22, 2014 Proving three points lie on a straight line (GCSE vectors) Apr 8, 2013 The Mathematical Ninja's Rules of Fractions Jul 16, 2012 Secrets of the Mathematical Ninja: Squaring three-digit numbers, part III subscribe via RSS