John H. Mason
John has been teaching mathematics for more than 50 years, having started tutoring at 15. He first encountered George Pólya's ideas in 1967 as a teaching assistant in Wisconsin where he received his PhD in mathematics. At the Open University in 1970 he used Pólya's ideas and his own experience to design the first two mathematics summer schools and to inform his writing of distance teaching materials for undergraduates. In 1984 he was co-founder of the Centre for Mathematics Education at the Open University which he led in various capacities for some 20 years. His interests are in thinking mathematically (the title of his best known book) and in supporting those who wish to work with others on their mathematical thinking. Specific topics include the role of mental imagery, the role and nature of attention, and the flow of energies in teaching and learning mathematics. Other books he has co-authored include Researching Your Own Practice: The Discipline of Noticing (Routledge) Fundamental Constructs in Mathematics Education (Routledge), Designing and Using Mathematical Tasks (Tarquin Publications), Questions & Prompts for Mathematical Thinking and Thinkers (Association of Teachers of Mathematics), Mathematics as a Constructive Activity: learners generating examples (Erlbaum) and a range of materials for Open University students. He can be reached at: http://mcs.open.ac.uk/jhm3.