The study found that a curriculum which incorporated three empirically derived principles of curriculum design (e.g., use of a wide range of examples to illustrate each concept) was significantly more effective than a basal approach in teaching fractions concepts to 40 low-performing or learning-disabled high school students. (Author/DB)

This critique of H. Lee Swanson's "Toward a Metatheory of Learning Disabilities" comments on Swanson's concept of learning disabilities, cognitive science, and information processing theory. A different research and theory-building agenda is proposed, focusing on society's definition of learning disabilities and instructional issues and…