Everyday Mathematics
The Everyday Mathematics program, developed by the University of Chicago School Mathematics Project , is a core curriculum that enriches the mathematical experiences of teachers and students.  Everyday Mathematics encourages teachers and students to explore more of the spectrum of mathematical ideas through a deeper understanding of key mathematical concepts and an in-depth study of all the strands of mathematics. It integrates mathematics into other subject areas so math becomes part of ongoing classroom and external events.  

For more information on the Everyday Mathematics Program, visit Everyday Math - a site that provides information about the Math Curriculum used by children in K-5th.