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The authors of “The Classroom Observation Protocol for Undergraduate STEM (COPUS): A New Instrument to Characterize STEM Classroom Practices” (CBE Life Sci. Educ. [2013], 12, 618–627; doi:10.1187/cbe.13-08-0154) have provided a revised version of their supplemental data.
The revised supplement was posted on March 7, 2014.
