After a successful 24-hour online mathematical magic show in 2020, a group of maths communicators are back to do another ambitious and fun 24-hour online show, this time about maths and games. We're raising money for four charities close to our hearts, and one of these is DEC.

At times of overseas emergency, the DEC brings together a unique alliance of the UK's aid, corporate, public and broadcasting sectors to rally the nation's compassion, and ensure that funds raised go to DEC agencies best placed to deliver effective and timely relief to people most in need.