Riley está leyendo un libro que tiene veinte páginas. Riley lee doce páginas antes del almuerzo. Riley lee cinco páginas después del almuerzo. Riley dice que leyó diecisiete páginas en su libro. ¿Tiene razón Riley? Demuestra todo tu razonamiento matemático.
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Embedding Common Core aligned Exemplars tasks into our units of study has strengthened teachers understanding of the Common Core Learning Standards while improving student performance. Significant growth in student achievement has taken place across the grades in the Mathematical Practices ... even our youngest students do the work of real mathematicians to represent and solve authentic real-world problems.
T. Appel Peterson
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