The irony of this paper is one of its co-author, Sandra Stotsky, is a member of the common core validation committee but she is arguing against the common core. Stotsky has also testified in NJ against our NJ math standards.
She is from Massachusetts and believes that her state and California should be the model to follow. Also note her chilling alternative to the common core, adopt the Achieve Algebra II assessment.
Maybe the common core is not so bad after all!!