Master of Science, Cambridge University, 1955. Mathematics teacher Christ's Hospital, Hertford, England, 1953-1959. Lecturer in mathematics Homerton College, Cambridge University, 1959-1961, head mathematics department, 1961-1973, deputy principal, 1966-1986.
Chairman primary working group Cockcroft Committee, 1978-1981. Author: (with others) Primary Mathematics Today, 1970, 82. From Graphs to Calculus, 1978.
Teaching Calculus, 1982. In-Service Education in Primary Mathematics, 1985, Children, Mathematics and Learning, 1990, Calculators, Children and Mathematics, 1991. Editor: (with others) Teachers of Mathematics, 1980.
Editor: (with others) Teachers of Mathematics, 1980. Children Reading Mathematics, 1984. British Petroleum grantee, 1979-1982.
School Curriculum Development Committee grantee, 1984-1989. Nuffield Foundation grantee, since 1986.