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Direct linkPane, John F.; Griffin, Beth Ann; McCaffrey, Daniel F.; Karam, Rita – RAND Corporation, 2014
This addendum to previously published results presents alternative analyses of data from large-scale effectiveness studies of Cognitive Tutor Algebra I in middle schools and high schools. These alternative analyses produce results that are substantively the same as previously reported. We find a significant positive effect of 0.21 standard…
Descriptors: Algebra, Statistical Significance, Pretests Posttests, Reader Response
Peer reviewed
Download full textSato, Edynn; Rabinowitz, Stanley; Gallagher, Carole; Huang, Chun-Wei – National Center for Education Evaluation and Regional Assistance, 2010
This study examined the effect of linguistic modification on middle school students' ability to show what they know and can do on math assessments. REL West's study on middle school math assessment accommodations found that simplifying the language--or linguistic modification--on standardized math test items made it easier for English Language…
Descriptors: Test Items, Standardized Tests, Mathematics Tests, Testing Accommodations
