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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