subitize

(redirected from Subitise)

subitize

(ˈsʌbɪˌtaɪz) or

subitise

vb
(Psychology) psychol to perceive the number of (a group of items) at a glance and without counting: the maximum number of items that can be subitized is about five.
[C20: from Latin subitus sudden + -ize]

subitize


Past participle: subitized
Gerund: subitizing

Imperative
subitize
subitize
Present
I subitize
you subitize
he/she/it subitizes
we subitize
you subitize
they subitize
Preterite
I subitized
you subitized
he/she/it subitized
we subitized
you subitized
they subitized
Present Continuous
I am subitizing
you are subitizing
he/she/it is subitizing
we are subitizing
you are subitizing
they are subitizing
Present Perfect
I have subitized
you have subitized
he/she/it has subitized
we have subitized
you have subitized
they have subitized
Past Continuous
I was subitizing
you were subitizing
he/she/it was subitizing
we were subitizing
you were subitizing
they were subitizing
Past Perfect
I had subitized
you had subitized
he/she/it had subitized
we had subitized
you had subitized
they had subitized
Future
I will subitize
you will subitize
he/she/it will subitize
we will subitize
you will subitize
they will subitize
Future Perfect
I will have subitized
you will have subitized
he/she/it will have subitized
we will have subitized
you will have subitized
they will have subitized
Future Continuous
I will be subitizing
you will be subitizing
he/she/it will be subitizing
we will be subitizing
you will be subitizing
they will be subitizing
Present Perfect Continuous
I have been subitizing
you have been subitizing
he/she/it has been subitizing
we have been subitizing
you have been subitizing
they have been subitizing
Future Perfect Continuous
I will have been subitizing
you will have been subitizing
he/she/it will have been subitizing
we will have been subitizing
you will have been subitizing
they will have been subitizing
Past Perfect Continuous
I had been subitizing
you had been subitizing
he/she/it had been subitizing
we had been subitizing
you had been subitizing
they had been subitizing
Conditional
I would subitize
you would subitize
he/she/it would subitize
we would subitize
you would subitize
they would subitize
Past Conditional
I would have subitized
you would have subitized
he/she/it would have subitized
we would have subitized
you would have subitized
they would have subitized
References in periodicals archive ?
In fact, even after one-on-one instruction, he often would subitise or estimate how many objects were present and then change his counting to match his guess:
Embedded within the construct of cardinality (and a student's understanding of number) is the student's ability to subitise.
Although subitising occurs in pre-verbal infants (Xu, Spelke, & Goddard, 2005), 11 per cent of Kindergarten children could not verbally subitise two dots.
accessed without counting (DC) * Conservation of Number (C&S, KR) Different forms of a number (Ma) * (F) Connect number names, numerals and quantities (ACMNA002) * (F) Subitise small collections (ACMNA003) Perceptual 2 (P2) * Perceptual subitiser to 5 (C&S) 0-5 * Sees number patterns up to 5 (KR) One card at a time.
The ability to subitise is not based on pre-verbal counting (or even fast counting), and is commonly limited to no more than four objects (Balakrishnan & Ashby, 1992).
On reflection, children may have been relying on their ability to subitise small numbers and had not linked this idea with the idea of counting.
With regard to young Indigenous students and number, the literature identifies the ability to subitise as intuitive knowledge about mathematics that young Indigenous students bring to the classroom.
While the results of the Evaluation of Mathematics in Indigenous Context Project (Aboriginal Education Board of Studies NSW, 2007)--a large project involving seven schools, 18 teachers and 450 students from Kindergarten to Year 2--showed that Indigenous students' ability to subitise improved with intervention after one year of school, it was not possible to draw conclusions from the results because of inconsistency of testing across sites and the lack of data on the intervention that occurred at each site.
It has also been found that children can usually subitise before being able to count and that it may even be a necessary antecedant to counting (Klein & Starkey, 1988).