Symmetric dot patterns are a particularly powerful object for investigation, providing opportunities for foundational learning across PK–5. We found that second-grade students naturally used repeated addends to count symmetric dot patterns created using the new software TileFarm.
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Beth L. MacDonald, Diana L. Moss,, and Jessica H. Hunt
In this article, we explore how playing with dominoes not only requires students to count but also to subitize when constructing number and operations.
