Effects of a Multitier Support System on Calculation, Word Problem, and Prealgebraic Performance Among At-Risk Learners

Powell, Sarah R. ; Fuchs, Lynn S. ; Cirino, Paul T. ; Fuchs, Douglas ; Compton, Donald L. ; Changas, Paul C.

Exceptional children, 2015-07, Vol.81 (4), p.443-470 [Periódico revisado por pares]

Los Angeles, CA: SAGE Publications

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