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Penuel, William R.; Gallagher, Lawrence P. – Journal of the Learning Sciences, 2009
This study compared the efficacy of 3 approaches to professional development in middle school Earth science organized around the principles of Understanding by Design (Wiggins & McTighe, 1998) in a sample of 53 teachers from a large urban district. Teachers were randomly assigned to a control group or to 1 of 3 conditions that varied with…
Descriptors: Units of Study, Earth Science, Faculty Development, Teacher Competencies
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McNeill, Katherine L.; Krajcik, Joseph – Journal of the Learning Sciences, 2009
We investigated how 2 different curricular scaffolds (context-specific vs. generic), teacher instructional practices, and the interaction between these 2 types of support influenced students' learning of science content and their ability to write scientific arguments to explain phenomena. The context-specific scaffolds provided students with hints…
Descriptors: Chemistry, Teaching Methods, Scaffolding (Teaching Technique), Writing Instruction