These were so popular with the bar staff that they kept them behind the bar and insisted we made more in April!
Ian Stewart’s mathematical treasures column, cut out from the weekend papers, also provided a distraction, particularly this problem:
We also had a play with this set of cards which I’ve been working on for an upcoming NRICH problem. The idea is that you turn over two cards and have to find a number that satisfies both. I got lots of useful feedback, none of which I’ve had time to incorporate yet!