We examined the effect of intervention dosage on mathematics outcomes for students with or at risk for mathematics learning disability in kindergarten through third grade. Using linear and nonlinear models, we meta-analyzed 164 effect sizes from 24 published experimental and quasi-experimental studies. Results supported a linear model and an…

A meta-analysis of single-case design research was conducted to evaluate the effectiveness of mathematics interventions for elementary grade (K-5) students with mathematics difficulties (MD) and mathematics learning disabilities (LD). The study examined whether intervention effectiveness varied as a function of participant characteristics (i.e.,…

Students with severe and persistent academic or behavioral challenges may benefit from data-based individualization (DBI). Starting with an evidence-based standard protocol and systematic progress monitoring, teachers can evaluate growth and implement individualized interventions to meet students' needs. Specifically, this article addresses the…

We examined to what extent subgroups of students identified with learning disabilities (LDs; N = 630) in the Early Childhood Longitudinal Study, Kindergarten Class of 1998 to 1999 (ECLS-K): 1998 national longitudinal study displayed heterogeneity in longitudinal profiles of reading and mathematics achievement from first to eighth grades.…

This study replicates and extends prior research on multisensory mathematics instruction (Grünke, Urton, & Karnes, 2018) by integrating a touch points strategy, performance feedback, reward system, and a reinforcing card game into an instructional package. A multiple baseline design across participants was used to evaluate the effects of the…

Fewer than half of students demonstrated proficiency on Michigan state-administered summative assessments at the end of third grade at a rural, Title I school in Michigan. The purpose of this quantitative study was to compare reading fluency gains between grade levels (i.e., kindergarten, first, and second grades) in an effort to better understand…

Struggling readers who are in need of Tier 2 supplemental reading instruction within a multitier system of support (MTSS) or a response to intervention are defined as those who are performing in the bottom 20% in reading-related skills as compared with their classroom peers. An MTSS model is a framework for instruction that provides increasing…

The majority of research on the relationship between phonological awareness and written language focuses on demonstrating the influence of the former on the latter. However, the aim of this study is to analyse the effects of an Early Years written language programme on phonological awareness. The sample comprises 56 Spanish children aged 5-7 who…

Implementation of evidence-based practices (EBPs) is paramount to students' development of mathematics proficiency. This study investigated "practice-based evidence" of interventionists' actual use of explicit mathematics instruction, a well-established EBP. Specifically, this study analyzed direct observation data collected in a…

Implementation of evidence-based practices (EBPs) is paramount to students' development of mathematics proficiency. This study investigated "practice-based evidence" (Green, 2008) of interventionists' actual use of explicit mathematics instruction, a well-established EBP. Specifically, this study analyzed direct observation data…

The purpose of this project evaluation was to assess the impact of data-based individualization (DBI) on the mathematics achievement of students with intensive mathematics learning needs, including students with disabilities. The evaluation study used a cluster randomized trial in which elementary schools were randomly assigned to treatment using…

The purpose of this analysis was to assess whether effects of 1st-grade mathematics intervention apply across the range of at-risk learners' initial skill levels. Students were randomly assigned to control (n=213) and 2 variants of intervention (n=385) designed to improve arithmetic. Of each 30-minute intervention session (48 over 16 weeks), 25…

In Tanzania, many people are not aware of the concept of learning disabilities. Parents and teachers often do not realise that children who do poorly in school and do not have visible disabilities, could still have a disability that is causing their poor school performance. This paper presents the results of a research and service project to…

This paper reviews findings from four research syntheses that report the effects of academic language and/or reading interventions on language and reading outcomes for English learners who have or are at risk for learning difficulties. Studies included in the syntheses varied in research design and addressed multiple areas of reading and language.…

We review the evolution of the conceptualisation of dyslexia and along with it the current, 21st century definition of dyslexia. Our starting point is the seminal report by Pringle Morgan in 1896, followed by early 20th century reports by Hinshelwood, and continuing with concepts of brain injury and minimal brain dysfunctions then to the emergence…