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a mile wide and an inch deep

What does a focused and rigorous curriculum look like in the top achieving countries? The number of topics that children are expected to learn at a given grade level is relatively small, permitting a thorough and deep coverage of each topic. For example, nine topics are the average number intended in the second grade. The US by contrast expects second grade teachers to cover twice as many mathematics topics. The result is a characterization of the US curriculum as a mile wide and an inch deep.

Common Core math standards

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  • The Next Generation Science Standards
  • Schmidt, William H., and Richard T. Houang. “Curricular Coherence and the Common Core State Standards for Mathematics.” Educational Researcher 41, no. 8 (November 1, 2012): 294–308. doi:10.3102/0013189X12464517.

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