• Knowledge of mathematical symbols goes beyond numbers 

      Douglas, H.; Headley, M. G.; Hadden, S.; LeFevre, J. A. (Journal of Numerical Cognition, 2020-12-03)
      The written language of mathematics is dense with symbols and with conventions for combining those symbols to express mathematical ideas. For example, reading a factored polynomial function such as f(x) = x²(2x + 15) ...