Fifteen years after the calamitous rollout of the Common Core math standards, the once-derided strategy has proven its staying power, with many states holding onto the original plan or some close ...

FLORISSANT • The 40 parents sat in child-sized chairs inside the library of Barrington Elementary School and watched intently as a fourth-grade teacher wrote a problem on the smartboard. Then she ...

Illustrative Mathematics was established in 2011 at the University of Arizona as a means to assist schools in adopting the Common Core standards. It has since grown to include a K-12 math curriculum ...