Learn more about accessibility tools in Blackboard on their support page:
Blackboard Ally offers automatically generated, alternative formats for website content and any embedded or linked files in your course. This allows all students to access course content in the format that they need to be successful. Choose the format(s) that meet your needs as a learner or that better suits your device.
JAWS is a computer screen reader program for Microsoft Windows that allows blind and visually impaired users to read the screen either with a text-to-speech output or by a refreshable Braille display.