The effect of a self-directed mathematics program on the math achievement of students who are gifted and talented (GT) was evaluated. An instructional management system, Accelerated Math (Advantage Learning Systems, 1998a), was used to assign instruction, monitor student progress, and provide teachers with the information they needed to differentiate math instruction for GT learners. Students whose teachers used the instructional management system significantly outperformed the GT students who participated only in the standard curriculum. Both quantitative and qualitative differences in the performance of GT and non-GT students were identified and within-group variability among GT students is considered.
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