Young children's early repeating patterning abilities are important foundations for their later mathematical development. Prior studies on young children's repeating patterning abilities have been conducted exclusively in developed countries differing in economic, societal, and educational characteristics from developing countries. In this study,…

Investigates the development of an adaptive strategy for the estimation of numerosity from the theoretical perspective of strategic change. Hypothesizes that there will be a developmental difference in the adaptive use of estimating strategies with age and that this adaptation will produce better estimation. Shows support for both hypotheses. (DSK)