This topic introduces some of the most commonly recognized forms of disability, wheelchair use, blindness and hearing impairment. Learners get a short explanation of each, from spinal cord injuries and mobility conditions to low vision and varying degrees of hearing loss, along with tools people may use such as screen readers, braille, sign language or hearing aids. These are also the disabilities our built environment is usually designed around, through ramps, tactile paving and accessible signage. The topic closes by noting that visible disabilities are only part of the larger picture.