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Schoen, 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
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Kowalski, K. – International Journal of Mathematical Education in Science & Technology, 2005
This work extends the theory of the fixed charge transportation problem (FCTP), currently based mostly on a forty-year-old publication by Hirsch and Danzig. This paper presents novel properties that need to be considered by those using existing, or those developing new methods for optimizing FCTP. It also defines the problem in an easier way,…
Descriptors: Mathematical Concepts, Mathematical Applications, Programming, Information Networks
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De Corte, Erik; Verschaffel, Lieven – 1980
Design and results of an investigation attempting to analyze and improve children's solution processes in elementary addition and subtraction problems are described. As background for the study, a conceptual model was developed based on previous research. One dimension of the model relates to the characteristics of the tasks (numerical versus word…
Descriptors: Addition, Cognitive Development, Cognitive Processes, Educational Research