Category: Subitising

— Subitising, Welcome —

Visual Cluster Cards, Subitising and Icon Cards – Same or Different?

April 8, 2021

I was recently introduced to Professor Hamesh Sharma by Judy Hornigold and to Chris Woodin  through my own research. I have always been an advocate for the importance of subitising as a foundation for number sense and mathematical thinking. Are Sharma’s visual clustering and Woodin’s icon cards related to subitising, or not! That’s what I… Read More Visual Cluster Cards, Subitising and Icon Cards – Same or Different?

— Conceptual Subitising, Subitising —

Subitising – Moving from Perceptual to Conceptual

November 9, 2018

Conceptual subitising is the ability to recognise a whole quantity as the result of recognising smaller quantities. Sayers and others (2016) suggest that conceptual subitising may lead to the later development of arithmetic as it leads to decomposition or partitioning of numbers, the commutativity of addition, and part-whole knowledge. Sayers article is below and is an interesting… Read More Subitising – Moving from Perceptual to Conceptual

— Subitising —

Subitising

September 2, 2018

Subitising refers to being instantly and automatically able to recognise small numerosities without having to count (Clements, 1999; Jung et al., 2013; Moeller et al., 2009; Clements & Sarama, 2009).   ‘Some suggest that subitising may well be the developmental prerequisite skill necessary to learn counting. If so, we should examine subitising more closely and… Read More Subitising