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Schenke, Katerina; Nguyen, Tutrang; Watts, Tyler W.; Sarama, Julie; Clements, Douglas H. – Journal of Educational Psychology, 2017
We examined whether African American students differentially responded to dimensions of the observed classroom-learning environment compared with non-African American students. Further, we examined whether these dimensions of the classroom mediated treatment effects of a preschool mathematics intervention targeted at students from low-income…
Descriptors: Mathematics Achievement, Racial Differences, African American Students, Classroom Environment
Clements, Douglas H.; Sarama, Julie; Farran, Dale; Lipsey, Mark; Hofer, Kerry G.; Bilbrey, Carol – Society for Research on Educational Effectiveness, 2011
Studies show that the mathematics test-score gap is evident at every level of schooling and can be linked to students' earlier performance. For example, a mathematics performance gap was found in children as young as three years of age (Case & Griffin, 1990; Jordan, Huttenlocher, & Levine, 1992). Addressing the mathematics performance gap…
Descriptors: Preschool Curriculum, Mathematics Curriculum, Urban Schools, Curriculum Evaluation
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Clements, Douglas H.; Sarama, Julie – American Educational Research Journal, 2008
A randomized-trials design was used to evaluate the effectiveness of a preschool mathematics program based on a comprehensive model of research-based curricula development. Thirty-six preschool classrooms were assigned to experimental (Building Blocks), comparison (a different preschool mathematics curriculum), or control conditions. Children were…
Descriptors: Experimental Groups, Control Groups, Mathematics Curriculum, Effect Size
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Clements, Douglas H.; Sarama, Julie; Layzer, Carolyn; Unlu, Fatih; Wolfe, Christopher B.; Spitler, Mary Elaine; Weiss, Daniel – Society for Research on Educational Effectiveness, 2016
Although some research-based educational practices have shown promise, many fail to be implemented at a scale that affects more than a small proportion of children. Further, research on interventions for young children includes mixed results, with most documenting "fadeout" of effects after several years, but some showing lasting…
Descriptors: Mathematics Achievement, Technology Uses in Education, Educational Technology, Intervention
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Szilagyi, Janka; Clements, Douglas H.; Sarama, Julie – Journal for Research in Mathematics Education, 2013
This study investigated the development of length measurement ideas in students from prekindergarten through 2nd grade. The main purpose was to evaluate and elaborate the developmental progression, or levels of thinking, of a hypothesized learning trajectory for length measurement to ensure that the sequence of levels of thinking is consistent…
Descriptors: Elementary School Mathematics, Thinking Skills, Cognitive Processes, Young Children