Andrew Jobbings Senior Kangaroo

The Andrew Jobbings Senior Kangaroo is the senior UKMT follow-on competition for students who have already performed strongly in the Senior Mathematical Challenge. It keeps the compact, answer-focused character of the Kangaroo format, but raises the level of the ideas involved. Students are not expected to write a long proof for every question; they are expected to recognise structure quickly, choose an efficient route and record an exact answer under time pressure. The competition is named after Andrew Jobbings, who made a major contribution to UKMT activities and helped develop the UK's relationship with the international Kangourou sans Frontières network. That history explains why the event feels different from an ordinary school extension paper. Kangaroo competitions are designed to make challenging mathematics available to large numbers of students, while still rewarding genuine ingenuity. Its place in the UKMT pathway needs to be clear. The usual starting point is the Senior Mathematical Challenge, followed by a Senior Kangaroo invitation or entry route under the current rules. BMO Round 1 is a parallel senior follow-on with a different output: Kangaroo answers are concise and numerical, while BMO expects written mathematical arguments. A student may enjoy one format more than the other; the competitions should not be treated as a simple ranking. We rate the Senior Kangaroo at Advanced Level. That reflects the selective entry and the problem-solving demand for senior students. Preparation should focus on decision making, not on memorising tricks: past papers, time management, exact arithmetic and reviewing why an attractive method failed are more useful than racing through university topics. Parent perspective: Senior Kangaroo is a test of mathematical judgement under pressure, not a shortened proof competition. ---