Walk in to any office or even home and it's striking how little handwriting you see. Walk in to a maths department and you'll see lots of screens; but you'll also see lots of scribbling on boards, black and white, and even on paper. Here's Becky in 'Show Me the Maths', part 4. Short films that get down to the maths. You can find out more about Becky's work here: https://www.maths.ox.ac.uk/people/rebecca.crossley You can watch more films in the series here:    • Show Me the Maths