Places assigned and places chosen have major implications for the lives of children. While the former are a result of children's subordinate position in an adult world, the latter are the essence of their agency. Beginning at a young age children seek out places to claim as their own. Places, real and imaginary, shape children and children shape…

The authors explore how children's play can support the development of the foundations of mathematics learning and how adults can support children's representation of--and thus the "mathematization" of--their play. The authors review research about the amount and nature of mathematics found in the free play of children. They briefly…