The Partnership for 21st Century Skills (P21) has forged alliances with key national organizations representing the core academic subjects, including Social Studies, English, Math, Science, Geography, World Languages and the Arts. These collaborations have resulted in the development of 21st Century Skills Maps that illustrate the essential intersection between core subjects and 21st Century Skills. The Partnership advocates for the integration of 21st Century Skills into K-12 education so that students can advance their learning in core academic subjects. Developed through a year-long collaborative process, this map reflects the collective effort of Mathematics professors, teachers and thought leaders, and illustrates the integration of Mathematics and 21st Century Skills. It will provide educators, administrators and policymakers with concrete examples of how 21st Century Skills can be integrated into core subjects, and how other subject areas can link successfully with mathematics. [Contributors include Susan Saltrick, Roxana Hadad, Michael Pearson, Charles Fadel, Bob Regan, and Jim Wynn.]