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Download full textTarr, James E.; Ross, Daniel J.; McNaught, Melissa D.; Chavez, Oscar; Grouws, Douglas A.; Reys, Robert E.; Sears, Ruthmae; Taylan, R. Didem – Online Submission, 2010
The Comparing Options in Secondary Mathematics: Investigating Curriculum (COSMIC) project is a longitudinal study of student learning from two types of mathematics curricula: integrated and subject-specific. Previous large-scale research studies such as the National Assessment of Educational Progress (NAEP) indicate that numerous variables are…
Descriptors: Mathematics Education, Teacher Characteristics, Mathematics Achievement, Program Effectiveness
Peer reviewedBecker, Douglas F.; Forsyth, Robert A. – Journal of Educational Measurement, 1992
Measurement scales developed using Thurstone and item-response theory (IRT) methods of scaling achievement tests for the same single-level data were compared for approximately 4,000 high school students taking the Iowa Tests of Educational Development in 1975. Results of both approaches indicate that variability increases as grade level increases.…
Descriptors: Achievement Tests, Age Differences, High School Students, High Schools
