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Does Variability Within Tier 2 Mathematics Intervention Groups Affect Students’ Response to Intervention?

  • Autores: Marah Sutherland, Derek B. Kosty, Taylor Lesner, Joanna Hermida, Keith Smolkowski, Christian Doabler, Ben Clarke
  • Localización: Exceptional children, ISSN-e 2163-5560, ISSN 0014-4029, Vol. 90, Nº. 3, 2024, págs. 331-346
  • Idioma: inglés
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  • Resumen
    • 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 pretest variability within ROOTS groups predict student gains from the intervention, and is this relationship moderated by (a) intervention group size (two- vs. five-student groups), (b) quality of explicit instruction, or (c) group-level initial skill? We found that ROOTS groups with greater pretest variability on a closely aligned mathematics measure experienced smaller gains from the intervention. This association was more impactful in larger intervention groups (i.e., five-student groups compared with two-student groups) and in groups with higher quality of explicit instruction. We unpack these findings and conclude with recommendations for practice and future research.


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