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Goldman, Susan R.; Greenleaf, Cynthia; Yukhymenko-Lescroart, Mariya; Brown, Willard; Ko, Mon-Lin Monica; Emig, Julia M.; George, MariAnne; Wallace, Patricia; Blaum, Dylan; Britt, M. Anne – American Educational Research Journal, 2019
This article reports the results of a randomized control trial of a semester-long intervention designed to promote ninth-grade science students' use of text-based investigation to create explanatory models of biological phenomena. The main research question was whether the student participants in the intervention outperformed the students in the…
Descriptors: Science Instruction, Intervention, Self Efficacy, Hierarchical Linear Modeling
Shannon, Lisa; Grant, Billie-Jo – Online Submission, 2015
Achieve3000 publishes a number of online literacy programs that differentiate lessons and activities based on student performance. Magnolia Consulting--an independent, third party evaluation firm--assessed Achieve3000 Solutions' impact on student learning during the 2014-15 school year. The researchers used a randomized control trial, where…
Descriptors: Reading Programs, Reading Achievement, Program Evaluation, Randomized Controlled Trials
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Rock, JoAnn Leah – ETS Research Report Series, 2007
In this study, a hierarchical linear model (HLM) was used within a cluster random assignment design to test the impact of "Criterion"? on students' writing skill when "Criterion" was used as a supplementary instructional tool in ninth grade English classrooms over a 4 week period. The study was conducted in three states:…
Descriptors: Hierarchical Linear Modeling, Teaching Methods, Grade 9, English Instruction