Peter Clarke has been a mathematics coordinator and deputy headteacher in primary schools in Australia and London. He has also worked as a mathematics advisor and has written many publications on primary mathematics. He also lectures on initial teacher training and postgraduate courses, and runs INSET at schools and conferences.
Caroline Clissold is a freelance consultant, supporting the teaching and learning of mathematics in schools across the UK. She has worked as a classroom teacher, and as a lecturer at UK universities. Caroline also worked with the National Centre for Excellence in the Teaching of Mathematics as a cooridnator and as a Maths Hub link advisor.