We often recognise the number associated with a particular pattern straight away, even before we have had time to count the items. What is Subitising (Subitizing)? Subitising refers to immediately knowing how many items lie within a visual scene for a small number of items. It is to have a rapid and confident judgement to know at a glance and without counting to identify the number of items in a group. For example, when a dice is thrown the observer at a glance, immediately and accurately knows how many dots lie on the face of the dice without counting. Th...