Abstract
This paper reports on the some findings of a longitudinal study into
children's understanding of number patterns by considering the
changing use of natural language and symbolic notation over time. The
study had its roots in an earlier study that provided a classification
system for the responses. The two findings reported here suggest that
responses to pattern stimulus items change over time and that the use of
natural language in the highest category seems to be a necessary
precursor to the emergence of algebraic notation.