A comprehensive and coherent set of mathematics standards for each and every student from prekindergarten through grade 12, Principles and Standards is the first set of rigorous, college and career ...

Students at dozens of U.S. high schools participated last month in the first round of an international competition in ...

A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can ...