Model math standards produced by conservative education advocates helped spark a battle in South Dakota that could spread to other states.

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Concerned about what they see as a dearth of instructional materials aligned with the Common Core State Standards in math, several educators in Utah, with support from the state office of education, ...

WESTERLY, R.I. -- Any adult who has tried to help a second-grader with homework has noticed math is not what it used to be. Now schools are unlocking the secrets of Common Core math for mystified ...