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A teacher assists third-grade students in a Chicago classroom. Illinois is one of 45 states that have adopted Common Core educational standards.
A teacher assists third-grade students in a Chicago classroom. Illinois is one of 45 states that have adopted Common Core educational standards.

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    Problemas de falta de atención

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Problemas de falta de atención

El problema del déficit de atención de los alumnos en clase.

Problemas de falta de atención

El problema del déficit de atención de los alumnos en clase.