**What is Subitizing ?**

**Perceptual subitizing**

Perceptual subitizing is closest to the original
definition of subitizing: recognizing a number without counting. For example,
children might "see 3" without using any learned mathematical knowledge.

**Conceptual subitizing**

But how is it that people see an eight-dot domino
and 'just know" the total number? This is Conceptual subitizing. They are
able to see the relationship between numbers when dealing with different
quantities. These people are capable of viewing number and number patterns as
units of units (Steffe and Cobb 1988).

Spatial patterns, such as those on dominoes, are one
kind.

**Subitizing and counting**

Young children may use perceptual subitizing to
make units for counting and to build their initial ideas of cardinality.

By : Marina Ho - BSc08

Seed Institute