With the increasing focus in schools and colleges in Wales and England on raising levels of performance and understanding in numeracy / mathematics, this is an excellent resource, particularly for the non-specialist maths teacher. Ian Loynd brings numeracy alive by promoting engagement, participation, and engagement through the challenge of solving “real world” issues. Teachers will gain confidence from using excellent ideas such as “open ended challenges”, “if this is the answer what is the question”, “diamond ranking”, “deliberately wrong answers” etc. The check lists at the end of each chapter are valuable to re-enforce learning and understanding. The links to demands of Ofsted on key issues such as engagement, promoting independent learning, assessment etc. are very helpful . A very well written text reflecting the author's personal enthusiasm, subject knowledge and practical experience of successful teaching of mathematics.