Analyses were conducted with second graders, drawn from an ongoing multi-cohort randomized controlled trial (RCT), who had been identified for RCT entry based on comorbid reading comprehension and word-problem solving difficulty. To estimate pandemic learning loss, we contrasted fall performance for 3 cohorts: fall of 2019 (pre-pandemic; n = 47),…

The purpose of this analysis was to examine achievement gaps on fractions for very-low-performing students as a function of whether they receive inclusive fraction instruction or specialized fraction intervention and with the shift to Common Core State Standards (CCSS). In three randomized control trials conducted in 3 consecutive years, 203…

In this article, the authors consider the power and limitations of responsiveness-to-intervention (RTI) for reducing the need for ongoing and intensive services for the segment of the school population traditionally identified as having a learning disability in mathematics. To assess the robustness of RTI, the authors describe four studies with…

The primary purpose of this study was to assess the effects of strategic counting instruction, with and without deliberate practice with those counting strategies, on number combination (NC) skill among students with mathematics difficulties (MD). Students (n = 150) were stratified on MD status (i.e., MD alone versus MD with reading difficulty)…

The effects of on-going curriculum-based measurement of student growth and expert system instructional consultation on teacher planning and student achievement in mathematics operations were studied for 33 elementary teachers assigned to one control or 2 experimental groups. Each teacher worked with two learning disabled or emotionally disturbed…

Examines the effects of a dyadic peer-mediated treatment, Peer-Assisted Learning Strategies (PALS), on first-grade children's mathematics development. Results indicated that treatment implementation was strong; teachers judged PALS to be effective and generally feasible; and students with and without disabilities, at all points along the…

The purpose of this study was to determine the proportion of empirical studies published in the last 5 years in a sample of special education peer-reviewed journals that: (1) assessed the effects of reading and math interventions with group designs and; (2) used random assignment to treatment conditions to test those interventions. A hand search…