Subitizing: What is it? Why teach it?
Clements, D. H. (1999). Subitizing: What is it? Why teach it? Teaching Children Mathematics, 5(7), 400-405. Subitizing is “instantly seeing how many.”/ ˈsu bɪˌtaɪz / [ soo-bi-tahyz ] Perceptual subitizing : recognizing a number without using other mathematical processes. For example, children might “see 3” without using any learned mathematical knowledge. Perceptual subitizing accounts for some surprisingabilities of infants. Perceptual subitizing also…