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Graphic Organizers and Students with Learning Disabilities: A Meta-Analysis
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Dexter, Douglas D.; Hughes, Charles A. – Learning Disability Quarterly, 2011
This meta-analysis reviews experimental and quasi-experimental studies in which upper-elementary, intermediate, and secondary students with learning disabilities learned from graphic organizers. Following an exhaustive search for studies meeting specified design criteria, 55 standardized mean effect sizes were extracted from 16 articles involving…
Descriptors: Learning Disabilities, Instructional Materials, Meta Analysis, Elementary School Students
A Meta-Analytic Review of Graphic Organizers and Science Instruction for Adolescents with Learning Disabilities: Implications for the Intermediate and Secondary Science Classroom
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Dexter, Douglas D.; Park, Youn J.; Hughes, Charles A. – Learning Disabilities Research & Practice, 2011
This article presents a meta-analysis of experimental and quasi-experimental studies in which intermediate and secondary students with learning disabilities were taught science content through the use of graphic organizers (GOs). Following an exhaustive search for studies meeting specified selection criteria, 23 standardized mean effect sizes were…
Descriptors: Learning Disabilities, Multiple Choice Tests, Effect Size, Vocabulary Development