• The Impact of Middle-Grades Mathematics Curricula and the Classroom Learning Environment on Student Achievement

    James E. Tarr, Robert E. Reys, Barbara J. Reys, Oscar Chavez, Jeffery Shih, and Steven J. Osterlind
    This article examines student achievement of 2533 students in 10 middle schools in relation to the implementation of textbooks developed with funding from the National Science Foundation (NSF) or publisher-developed textbooks.
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