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Educators are required to use evidence-based practices to support student development of academic skills. Results from single-case experimental designs are well suited for this purpose and may be more flexible for applied use than group-based designs. However, educators also require information about which interventions work for whom and under what conditions. Although previous reviews of single-case experimental designs exist, most focused on design characteristics related to internal validity. The purpose of this U.S. study was to determine the participant characteristics within multiple-baseline and multiple-probe across participant designs targeting academic skills. Representation of various demographic subgroups differ between studies targeting different academic skill areas (mathematics, reading, and writing). However, reporting was often inconsistent, with a substantial proportion of records omitting information about participants' race/ethnicity, economic status, and English learner status. This finding was divergent from best practice recommendations. Implications for future research are discussed within the context of the study's limitations. [ABSTRACT FROM AUTHOR]

This article introduces and describes the studies that are part of the thematic special series aimed at exploring research questions for improving learning outcomes for students with learning disabilities (SLD) in science and mathematics. Special educators have the requisite knowledge and skills to meaningfully include these students in studies that focus on important disciplinary understandings; yet, to date, relatively few special educators develop and validate interventions for students with high incidence disabilities to learn about science or mathematical practices. Given the fact that most SLD receive instruction in the general education classroom, where there are reforms that call for increased rigor in instruction and meaningful problem-solving for all students, it is imperative that SLD receive effective supports for deep content learning. We hope the current articles spark readers' interests in adding to this emerging body of research and invite others to build on the ideas shared in the special series. [ABSTRACT FROM AUTHOR]

The purpose of this study was to examine the effects of a number line intervention with supported self-explanation on student understanding of fraction magnitude and quality of explanation. Participants were three U.S. middle school students with significant behavior problems. Participants were given eight lessons containing explicit instruction for fraction number line placement and self-explanation. A multiple-probe design was used to evaluate the effects of the intervention. Visual analysis and Tau- U showed the intervention was very effective for improving student placement of fractions on the number line and increasing the quality of student explanations for their answers. Discussion of results and implications for future research and practitioners are included. [ABSTRACT FROM AUTHOR]