Students in Mrs. Wilson's fourth-grade classroom watch in anticipation as the guest teacher, Ms. Davis, demonstrates binary signaling using a lightbulb that flashes when she holds it in her hands. She challenges them to guess what she is trying to "say" while making the lightbulb flash on and off, explaining that the lightbulb stands for…

Teaching students with severe disabilities is a complex endeavor, and the skills and qualities of expert teachers for students with severe disabilities are not well understood. A lack of understanding about the unique roles and expertise of teachers of students with severe disabilities can influence the quality of education students with severe…