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Marah Sutherland; Derek Kosty; Taylor Lesner; Joanna Hermida; Keith Smolkowski; Christian T. Doabler; Ben Clarke – Exceptional Children, 2024
The effectiveness of Tier 2 interventions may depend on the variability of student skills within an intervention group. We investigated the effect of pretest variability within intervention groups using data from a large-scale study of ROOTS, a Tier 2 kindergarten mathematics intervention. Our research questions were as follows: Does mathematics…
Descriptors: Mathematics Instruction, Program Effectiveness, Kindergarten, Young Children