WESTERLY, R.I. (AP) — 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 ...

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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 ...

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 ...