Jane Emerson is Director of Emerson House, a centre for dyscalculia, dyslexia and dyspraxia. Jane is an experienced teacher of children with dyscalculia and a teacher trainer for courses on dyscalculia assessment and teaching, and a lecturer on dyscalculia. Patricia Babtie is an SEN teacher who works with children and adults with maths learning difficulties.Brian Butterworth is Emeritus Professor of Cognitive Neuropsychology at University College London