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Autor:
Brian C. Poncy, Westley Adcock, Jared Yaw, John Parkhurst, Christopher H. Skinner, Elisa Luna
Publikováno v:
International Journal of Behavioral Consultation and Therapy. 6:111-123
Researchers have found evidence that many students do not master basic mathematics skills and in 2009, for the first time in two decades, national U.S. math scores at a fourth-grade level did not improve (National Center for Educational Statistics, 2