**Mathematics Instruction for Students with Learning Disabilities or Difficulty Learning Mathematics - A Synthesis of the Intervention Research [K-12] **

**Russel Gersten, David J. Chard, Madhavi Jayanthi, Scott K. Baker, Paul Morphy, Jonathan Flojo**, Center on Instruction

05.2008

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This meta-analysis synthesizes experimental and quasi-experimental research on instruction that enhances the mathematics performance of students in grades 1-12 with learning disabilities (LD). For the purpose of this study, we defined mathematical interventions as instructional practices and activities that attempt to enhance the mathematics achievement of students with LD. In our analysis, we included only randomized controlled trials (RCTs) and quasiexperimental designs (QEDs) with clear evidence of pretest comparability.

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