Abstract
This paper provides an overview of a research-based framework for assessing
and teaching in early number which has been used extensively in research and
practice. The framework includes the following aspects: arithmetical
strategies, forward and backward number word sequences, numeral
identification, base-ten strategies, combining and partitioning, subitising and
spatial patterns, temporal sequences, finger patterns, and quinary-based
strategies. Five of these aspects are presented in tabular form as stages or
levels. Also described are guiding principles for studying early number
knowledge.