Tag: sets



Book Ideas: Sorting it out


(Vol. 2, Issue 4, February 2011) Sorting things into categories is one of the ways mathematics enters into our daily life. At “clean-up time,” children discover that forks and knives belong in one place, plates belong somewhere else, and glasses and cups belong in yet another place. As children and adults talk about what makes one set of things go together and why other things belong elsewhere, they are doing important talking—and thinking.

Ideas at Work: Algebraic thinking with shoes


(Vol. 2, Issue 1, September 2010) Cindy Collado and her preschool class at Stock School were involved in a shoe project that incorporated many math concepts through a variety of activities over the course of two months.