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Li, Suxia; Wu, Haizhen; Zhao, Jian; Ou, Ling; Zhang, Yuanxing – Biochemistry and Molecular Biology Education, 2010
In an effort to achieve high success in knowledge and technique acquisition as a whole, a biochemistry and molecular biology experiment was established for high-grade biotechnology specialty students after they had studied essential theory and received proper technique training. The experiment was based on cloning and expression of alkaline…
Descriptors: Experimental Groups, Biotechnology, Molecular Biology, Biochemistry
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Johnson, Carla; Fargo, Jamison; Kahle, Jane Butler – School Science and Mathematics, 2010
This longitudinal, five-year study of teachers and students who had participated in a systemic reform program in science explored if (1) teacher change in practice realized during a three-year program is sustained one, two, and three years following the program, (2) student performance on state science assessments two years following studying with…
Descriptors: Program Effectiveness, Educational Change, Longitudinal Studies, Achievement Gains
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Blom-Hoffman, Jessica; Wilcox, Kaila R.; Dunn, Liam; Leff, Stephen S.; Power, Thomas J. – School Psychology Review, 2008
Family-school collaboration related to children's physical development has become increasingly important as childhood obesity rates continue to rise. The present study described the development and implementation of a literacy-based, family component of a school-based health education program and investigated its viability, acceptability, and…
Descriptors: Experimental Groups, Control Groups, Obesity, Intervention
Bloom, Howard S. – MDRC, 2006
This chapter examines the core analytic elements of randomized experiments for social research. Its goal is to provide a compact discussion for faculty members, graduate students, and applied researchers of the design and analysis of randomized experiments for measuring the impacts of social or educational interventions. Design issues considered…
Descriptors: Research Methodology, Research Design, Experiments, Social Science Research
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Almekhlafi, Abdurrahman Ghaleb – Journal of Interactive Learning Research, 2006
This study investigated the effect of Computer Assisted Language Learning (CALL) on elementary-prep school students' improvement in English as a foreign language (EFL). Eightythree students in Al-Tamayoz Elementary-prep School, United Arab Emirates, were selected and divided into experimental and control groups (43 and 40 participants…
Descriptors: Statistical Analysis, Experimental Groups, Control Groups, Arabs