[BlindMath] Any pointers for a former colleague who wants to teach math

[Susan Jolly]

Interesting question.  Note that I am not responding to any legal or
bureaucratic issues.

He will of course have to learn the braille systems for language and math
that the students are using.  By the way, here in the U.S. there are
currently two different math systems in use.

I  recommend this book, now available as a free PDF file:

https://www.hadley.edu/Resources_list/Mathematics_Made_Easy_for_Children_wit
h_Visual_Impairment.pdf

There are also YouTube videos about braille, teaching braille, etc.

HTH, SusanJ