Using Data to Intensify Math Instruction: An Evaluation of the Instructional Hierarchy.

This study extends prior research by manipulating both intervention and skill difficulty using a multiple baseline across participants design with changing phases in a virtual tutoring environment. Participants were four U.S. students from third and fifth grades for whom appropriate and challenging instructional targets were selected following diagnostic assessment using curriculum-based measurement. Instructional strategies were selected to align or misalign with those instructional targets. The multiple baseline design was used to determine the functional relationship between the instructional strategies (acquisition or fluency-building) with appropriate and challenging skills. Results suggested that indicated intervention strategies aligned with students' skill proficiency resulted in improvements but that contraindicated intervention strategies that were misaligned with students' skill proficiency did not. Furthermore, most students rated the contraindicated intervention strategies as less acceptable or reported higher levels of math anxiety. [ABSTRACT FROM AUTHOR]