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Pane, 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
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Pullen, Paige C.; Tuckwiller, Elizabeth D.; Konold, Timothy R.; Maynard, Katrina L.; Coyne, Michael D. – Learning Disabilities Research & Practice, 2010
Vocabulary knowledge at school entry is a robust predictor of later reading achievement. Many children begin formal reading instruction at a significant disadvantage due to low levels of vocabulary. Until recently, relatively few research studies examined the efficacy of vocabulary interventions for children in the early primary grades (e.g.,…
Descriptors: Reading Difficulties, Instructional Design, Intervention, Reading Failure
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Finkelstein, Neal; Hanson, Thomas; Huang, Chun-Wei; Hirschman, Becca; Huang, Min – National Center for Education Evaluation and Regional Assistance, 2011
This study examines whether the Problem Based Economics curriculum developed by the Buck Institute for Education improves grade 12 students' content knowledge as measured by the Test of Economic Literacy, a test refined by the National Council on Economic Education (NCEE) over decades. Students' problem-solving skills in economics were also…
Descriptors: Test Items, Intervention, Economics Education, Problem Based Learning