Colette Delargy is a qualified primary school teacher who has specialised in primary maths for over 20 years. Through her advisory work in schools, she encourages teachers to adopt a more practical approach to teaching maths using the appropriate materials. She has proved that children perform much better in tests and, most importantly, in gaining confidence in their own ability, when they have a conceptual image of the mathematics they are studying. This sounds as if it is difficult to do but it is actually very easy with all the wonderful materials that are now available. Her experience has proven this to be true so many times that she has adopted the slogan, 'Hasten slowly'.