This was sent to me from someone at the state level. It has a great link to "best iPad apps for kids". Check it out. The article also suggests an app called "Baby Finger", in which kids can tap images and colored shapes that appear on the white background. For anyone who has used a light box with kids, with this program, the iPad duplicates the light box. I know it is geared toward visual impairment, but give it a shot with any of your students with severe disabilities.