subitize
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English
Alternative forms
Etymology
From Latin subitus (“sudden; unexpected”) + -ize, from the feeling of immediately knowing the number of items present.
Pronunciation
Verb
subitize (third-person singular simple present subitizes, present participle subitizing, simple past and past participle subitized)
- (transitive, intransitive, psychology) To judge (the number of objects in a group) rapidly, accurately and confidently without counting them.
- 2002, Kelly S. Mix, Janellen Huttenlocher, Susan Cohen Levine, Quantitative Development in Infancy and Early Childhood, Oxford University Press, →ISBN, page 47:
- Previous researchers have noted a similarity between the set sizes that adults can estimate rapidly, or subitize, and the set sizes that infants can discriminate: both are less than five items. This similarity has led some to suggest that subitizing is
- 2016, Jennifer Taylor-Cox, Math Intervention P–2: Building Number Power with Formative Assessments, Differentiation, and Games, Grades PreK–2, Routledge, →ISBN, page 52:
- When students subitize, they know how many because the arrangement is familiar and/or friendly. While recent information about the benefits of teaching subitizing has surfaced (Clements, 1999), early use of the term appeared more than
Related terms
Translations
to judge (the number of objects in a group)
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