In conversation with Robin Wilson Ashleigh Wilcox and Ellen Jolley chat to the professor and maths communicator about books, the Open University and music
On the cover: Spirographs Ashleigh Wilcox, Jenny Power and Rachel Evans show you how to draw pretty pictures
Dear Dirichlet, Issue 20 Cricket, coursework and karaoke are among the problems solved in this issue's Dear Dirichlet agony aunt column
