Teaching is more like doing magic. An illusionist might rely on tricks and technology, but that is not what holds you attention or diverts the eye. From EdTech to the classroom is like grounding the spaceman; I am now in the thick of it, rather watching from a distance. It is a very different place. I am also finding increasingly that I would prefer to rely on my ability to hold the class rather than deferring to often to the technology - even a video might not play, or there'll be no sound. As for slides - forget it. My default use to be lots of them plotting out my every move and word. I now have none at all - none. Perhaps a holding page if a class is online. Perhaps a few supporting images that I may or may not refer to - that could as easily be single frames or in a Doc.
You can't get more accesibile than a person talking and gesticulating. In some instances someone who has a hearing impairment can lip read. You can provide the proverbial hand out - NOT a print out of your slides (if there are any) but a prose approximation of what is said. It won't capture the interplay between teacher and student - and a lot of that now matters too. You build knowledge through constant banter - smart banter known as formative assessment where you seek to winkle our a student's knowledge or lack thereof. They try to express what they think or know, and others add to this (or not) and on returning to them you find they have adjusted their view a little - or at least added to their knowledge.