9082 /www/nrich/html/content/id/9082/ 10 2012-09-06T17:53:33 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">Mathematicians try to work systematically so they can see how they worked something out, and see patterns which messy work might not reveal. Here&#39;s a selection of tasks where having good ways to sort and organise can be very helpful. <br></br> <br></br> <br></br></mdoxml> 2 0 1 0 0 0 0