We hosted approximately thirty Year 10 pupils from partner schools in London (including Fulham Boys School, Grey Coat Hospital, Christ’s School, St Paul’s Girls School, and West London Free School). In addition to the mathematics sessions, break-out activities included a bridge-building engineering challenge in which teams of six pupils constructed a load-bearing bridge exclusively out of A3 paper, lollipop sticks and Sellotape, spanning 50cm, which was then tested – to destruction – by incrementally adding more and more weight for the bridge to bear. The pupils also took on a cypher challenge, again in teams of six, to construct a cypher using fifty 1p coins and fifteen 2p coins, and then – in half-teams – to encrypt and decrypt as much plaintext as possible. Here are some of the activities on offer: Mathematical Proof ( a report by Mr Cullen-Hewitt ) What constitutes a proof? Images of dusty chalkboards heavily laden with obscure symbols and inscrutable diagrams might spring to mind,...