60 children, aged between 4 and 7 years were given problems designed to assess their understanding of number invariance involving numbers of objects within their subitizing range, numbers outside their subitizing range but within their counting range, and large numbers they were not allowed to count. The results indicate that number invariance is initially developed for small numbers and then extended into the counting range and beyond.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.