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vanMarle, Kristy; Chu, Felicia W.; Mou, Yi; Seok, Jin H.; Rouder, Jeffrey; Geary, David C. – Developmental Science, 2018
Children's understanding of the quantities represented by number words (i.e., cardinality) is a surprisingly protracted but foundational step in their learning of formal mathematics. The development of cardinal knowledge is related to one or two core, inherent systems--the approximate number system (ANS) and the object tracking system (OTS)--but…
Descriptors: Number Systems, Cognitive Mapping, Longitudinal Studies, Preschool Children
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Libertus, Melissa E.; Feigenson, Lisa; Halberda, Justin – Developmental Science, 2011
Previous research shows a correlation between individual differences in people's school math abilities and the accuracy with which they rapidly and nonverbally approximate how many items are in a scene. This finding is surprising because the Approximate Number System (ANS) underlying numerical estimation is shared with infants and with non-human…
Descriptors: Nonverbal Ability, Mathematics, Number Systems, Preschool Children