Cookies and math tend to go together in an elementary school classroom. And not always as reward for a correct answer. Teachers use them as conceptual props to explain an operation like division. It ...

Add Yahoo as a preferred source to see more of our stories on Google. Fifteen years after the calamitous rollout of the Common Core math standards, the once-derided strategy has proven its staying ...

For five years, a San Francisco foundation funded, and a research organization closely monitored, a collaboration by 10 California districts to raise achievement under the Common Core math standards.