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Starkey, Prentice; Klein, Alice; DeFlorio, Lydia – Society for Research on Educational Effectiveness, 2013
There is a national need for effective interventions to improve school readiness and subsequent achievement in mathematics for students from low-income families. The purpose of this study was to implement and evaluate a 2-year preschool math intervention that began at preschool entry when children were 3 years of age and continued through the end…
Descriptors: Preschool Children, Preschool Education, Preschool Teachers, Kindergarten
Hulleman, Chris S.; Cordray, David S. – Society for Research on Educational Effectiveness, 2010
This paper outlines a method of determining the achieved relative strength (ARS) of an intervention by calculating the extent to which core intervention components are present in both the treatment and control condition. Using data from several examples the authors demonstrate how to calculate ARS indices, and subsequently how to incorporate them…
Descriptors: Intervention, Reading Instruction, Sample Size, Data Collection