This study evaluated the impact of a curriculum called the Early Literacy Skills Builder on the language and early literacy skills of students with significant developmental disabilities. Students in the control group received the ongoing sight word and picture instruction prescribed by their individualized education programs. Results indicate statistically significant interaction effects for the treatment group for two research team-designed measures of early literacy (the Nonverbal Literacy Assessment and a pretest/posttest for the experimental curriculum). Significant interaction effects were also found for two standardized measures (Peabody Picture Vocabulary Test III and Memory for Sentences of the Woodcock Language Proficiency Battery). Implications and future research needs are provided.

This study evaluated strategies to teach secondary math and science content to students with moderate and severe developmental disabilities in a quasiexperimental group design with special education teachers randomly assigned to either the math or the science treatment group. Teachers in the math group implemented four math units representing four of the five national math standards. The science teachers implemented four science units representing three of eight national science content standards. A fourth standard, science as inquiry, was embedded within each of the units. Results showed students made gains in respective content areas. Students who received instruction in math scored higher than students who received instruction in science on the posttest of math skills. Likewise, students who received instruction in science scored higher than students who received instruction in math on the posttest of science vocabulary skills. Limitations and suggestions for future research and practice are discussed.

A comprehensive review of research was conducted on teaching science to students with significant cognitive disabilities. Guidelines from the National Science Education Standards were used to identify categories of studies based on the strands of science. A total of 11 studies were identified from the 20 years of literature searched. In general, work in the area of science is sparse for students with significant cognitive disabilities. Eight of the 11 studies fell in Content Standard F: Science in Personal and Social Perspectives. Single subject experimental designs were the methodology used in all of the studies and outcomes suggest that this population benefits from instruction in highly specific skills with modeling and errorless learning strategies like time delay. The interventions found in the 11 studies that linked to science incorporated systematic response prompting methods similar to those found in evidence-based reading and math research for students with significant cognitive disabilities. Additional research is needed to identify methods to teach science to this population that includes both broader content and additional skills that link to state standards.

The purpose of this article is to propose a conceptual foundation for early literacy instruction for students with severe developmental disabilities. The two primary outcomes in the conceptual model are (a) enhanced quality of life through shared literature and (b) increased independence as a reader. Guidelines are offered for promoting shared literature by increasing opportunities for accessing literature and teaching access skills to students. For increasing students' independence as readers, recommendations are provided on teaching the components of reading outlined by the National Reading Panel. The proposed model will help develop guidance on the strategies for literacy instruction for students with severe developmental disabilities.

This investigation focused on the effects of a treatment package including multiple exemplar training, time delay, and a self-directed learning prompt (KWHL chart) on students' ability to complete an inquiry lesson independently and generalize to untrained materials. Three middle school students with moderate intellectual disabilities learned to self-direct themselves through a 15-step task analysis to complete inquiry lessons in chemistry and physical science. All three students achieved mastery across materials, science concepts, and instructional settings, but unanticipated generalization weakened the demonstration of experimental control. The results provide a potential method for students with moderate intellectual disabilities to learn science concepts.