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Clements, Douglas H.; Sarama, Julie; Wolfe, Christopher B.; Spitler, Mary Elaine – American Educational Research Journal, 2013
Using a cluster randomized trial design, we evaluated the persistence of effects of a research-based model for scaling up educational interventions. The model was implemented in 42 schools in two city districts serving low-resource communities, randomly assigned to three conditions. In pre-kindergarten, the two experimental interventions were…
Descriptors: Mathematics Instruction, Intervention, Early Childhood Education, Experimental Groups
Fitzgerald, Jill; Markham, Lynda R. – 1987
A study investigated the effects of direct instruction in the process of revision on students' knowledge of the revision process, their ability to make revisions on paper, and the quality of their writing. Subjects, 30 sixth grade students, were divided into an experimental and a control group. The experimental group received instruction in the…
Descriptors: Grade 6, Intermediate Grades, Knowledge Level, Learning Processes