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Direct linkSiler, Stephanie Ann; Klahr, David – Journal of Educational Psychology, 2016
One obstacle to understanding abstract concepts such as the "control of variables" strategy (CVS) is the tendency for learners to focus on surface rather than deep features in instructional materials. However, in tasks such as learning CVS, these same surface features may also support understanding, provided learners realize the…
Descriptors: Middle School Students, Learning, Science Experiments, Research Design
Mac Iver, Martha Abele; Mac Iver, Douglas J. – Journal of Educational Research, 2009
Recognizing the need to implement standards-based instructional materials with school-wide coherence led some Philadelphia schools to adopt whole-school reform (WSR) models during the late 1990s. The authors report on the relation between mathematics achievement growth for middle-grade students on the Pennsylvania System of School Assessments and…
Descriptors: Urban Schools, Mathematics Curriculum, School Restructuring, Achievement Gains
