Truth and Method

This report describes the results of a three-year study, the Informed Instruction Project, that investigated different approaches to mathematics instruction for students with learning disabilities and at-risk for special education services. The project focused on two strands of inquiry: (1) the effects of a computer-based diagnostic assessment system in aiding special education teachers to remedy students ' arithmetic misconceptions and (2) the effects of specific curricular interventions on students in a mainstreamed setting. The three sections of the report discuss the findings. The first section presents an overview of project dissemination and products. The second section is an overview of the findings, "Th