An important step in early numeracy is subitizing, or “instantly seeing how many.” There are 2 types of subitizing: perceptual and conceptual. Dot Configurations used for discussions and then used as quick images can facilitate the development of conceptual subitizing. This more advanced ability to group and quickly quantify sets in turn supports the development of number sense and arithmetic abilities. Douglas H. Clements notes, “Children who cannot subitize conceptually are handicapped in learning arithmetic processes.”

This is a digital download. It is a 201-page PDF, containing a page of directions, two pages of helpful background information/research, and 65 images that are repeated to facilitate two types of uses. The first set of 65 images are grouped under the title “Cards” and can easily be printed. The second set of the same 65 images is labeled “Slides.” A blank slide is provided between each dot configuration image so that teachers can more easily use as Quick Images.

Once you have purchased The Number Lab’s Dot Configurations, you'll have 24 hours to download the pdf. You will have a link displayed after purchase; in addition, the link will be emailed to you. We trust that you will follow copyright laws and use this digital download for your own use.