Are posters just decorative objects or is there massively underused educational potential in the poster? It's clear that posters can be colourful, attractive learning media which can enhance the learning environment - whether they bought, self-created or as we suggest a mix of both. Here we run over the value of posters in the educational setting, offers suggestions on selecting posters for learning, and include examples of various types of learning posters illustrated by our own posters.

This week we reissue Images of Infinity - first published in the 1980s - and written by Dik Tahta and Ray Hemmings. We've updated some elements of the book and there is a Foreword by Alf Coles. I met Dik before his death, but many will not know of him directly and not know of his work, except perhaps as that teacher..."Thanks to Mr Tahta, I became a professor of mathematics at Cambridge, a position once held by Isaac Newton" ...Stephen Hawking.