Conceptual replications are part and parcel of education science. Methodologically rigorous conceptual replication studies permit researchers to test and strengthen the generalizability of a study's initial findings. The current conceptual replication sought to replicate the efficacy of a small-group, first-grade mathematics intervention with 240…

The purpose of this study was to determine the effectiveness of a systematic, explicit, intensive Tier 3 (tertiary) intervention on the mathematics performance of students in second grade with severe mathematics difficulties. A multiple-baseline design across groups of participants showed improved mathematics performance on number and operations…

In this article, the authors summarize results from 5 randomized controlled trials assessing the effects of intervention to improve the fraction performance of fourth-grade students at risk for difficulty in learning about fractions. The authors begin by explaining the importance of competence with fractions and why an instructional focus on…

This article introduces a series of papers that explain and illustrate how a higher order thinking curriculum can be designed for a full spectrum of students, including students with learning disabilities. The article discusses an approach in which concepts, rules, and strategies are taught by organizing content around the process of noting…

Three curricular approaches to spelling instruction are discussed: whole word; phonemic; and morphemic. Sameness analysis is used to indicate the theoretical potential of each approach for helping students with learning disabilities to achieve generalization in their spelling, and the influence of generalization upon retention and transfer is…

Shortcomings of mathematics curricula are described and research on the use of sameness analysis with learning-disabled and at-risk students is outlined. The paper then illustrates how to teach addition-subtraction and multiplication-division relationships and their interrelationships in the context of solving word problems in mathematics.…

This paper describes common practices in social studies instruction and proposes a conceptually based model of history instruction for learning-disabled students, involving sameness analysis and integrating concepts into a network of knowledge. The model includes preskill instruction, problem-solution-effect analysis and note taking, vocabulary…