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Direct linkSchoen, Robert C.; LaVenia, Mark; Tazaz, Amanda M.; Farina, Kristy; Dixon, Juli K.; Secada, Walter G. – Grantee Submission, 2020
Using a cluster-randomized controlled trial research design, this study investigates the effect of the first year of a three-year teacher professional development program on grades 1 and 2 student achievement in mathematics. Although the findings reported in the present report do not meet the standard cutoff for statistical significance (e.g., 95%…
Descriptors: Elementary School Students, Grade 1, Grade 2, Mathematics Achievement
Pruitt, Gary K.; Dieterly, Duncan L. – 1975
The results of a study to evaluate the potential life-cycle costs and cost savings that could be realized by applying the Digital Avionics Information System (DAIS) concept to future avionic systems were presented. The tasks evaluated included selection of program elements for costing, selection of DAIS installation potential, definition of a…
Descriptors: Aerospace Industry, Aviation Technology, Cost Effectiveness, Information Systems
