Only Slate Plus members can gift Slate stories. Become a member to share 10 free articles a month. This story was produced by the Hechinger Report, a nonprofit, independent news organization focused ...
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.
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