OU on the BBC: More or Less - Strokes, teachers and electoral reform

Tim Harford investigates strokes, the plight of new teachers, overhauling the electoral system and how computers struggle with big numbers as much as we do! First published on Thu, 14 May 2015 as OU on the BBC: More or Less - Strokes, teachers and electoral reform. To find out more visit The Open University's Openlearn website. Copyright 2015