The issue of enjoying mathematics will be discussed throughout this book. We believe that it is crucial that all parties concerned with developing children's mathematical skills should enjoy the process, but in this chapter it will emerge that enjoyment and mathematics are rarely identified together, and this issue must be addressed. This process can begin by considering the factors that affect the teaching of mathematics. The National Numeracy Strategy has a key role, but is not the complete solution. In this book we aim to extend expertise and confidence so that issues that make teachers less confident and less effective in their mathematics teaching are identified and eliminated.