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 ...

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.

Common Core math has sparked a great deal of contention across the country in the past few years. It has its supporters, those who say that it teaches students to better understand mathematical ...