What is Subitizing?
Subitizing is defined as the skill of “instantly seeing how many” without the need for counting, when presented with a group or number of things (Reys, et al., 2012). The term Subitizing comes from the Latin word for suddenly, and can also be described as the “direct perceptual apprehension of numerosity of a group” (Clements, 1999).
Children who are entering school can often identify quantities of up to 3 items without counting, but simply through inspection and using dice, cards or ten frames can identify groups up to 4 (Reys, et al., 2012). Certain arrangements are more easily perceivable than others to young children, for example rectangular arrangements on dice are most easily perceived, followed by linear and then circular. Random arrangements are the most difficult to perceive due to no apparent patterns, making it easier to subitize (Reys, et al., 2012).
This website was created as the group component of the second assignment for EDF2304 - Early Numeracy.
Members of this group include:
Emily Bolin, Teaghan Rooks, Sophie Werner and Susanna Wu.
Justification & Big Ideas in Subitizing
Exploring the research
Teaching the Topic
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