Unfortunately the best resources for math is traditional if you are working with a school system I would have you require them to drop off brailled out tactile materials. This is the best way to do things.

Can't help you with learning resources, but I've found that the interactive Python interpreter works great as a scientific calculator. It can even handle complex numbers without importing anything.

I myself am looking for a standalone accessible calculator that I can take to exams. I'm no developer, but I'm sure someone can come up with an accessible alternative to TI's $100 GameBoys.

There are many different challenges with accessible Math and STEM in general. A lot depends on the nature of the content - expressions vs. graphs vs. word problems, etc.

In terms of resources that are accessible right off the shelf, there is precious little, unfortunately. For best results, you will likely need to have alternate media accommodations wherein someone has formatted the content for your optimal use.

If you're in the US at a public school, this should be provided for you.

If you are seeking magnification/enlargement, MathML can be useful, and you can render it for visual enlargement instead of spoken representation if you have MathType.

I find a lot of publishers try to describe images of expressions, or else provide LaTEX as a description. If you can learn LaTEX it will certainly help.

I know- what fun. And you probably want to study right now, right?

I wish there was better news for you. I know that $1 has an accessible graphing calculator and some content, but it is more about the tools for teaching and studying math than it is a content repository.

I've been working with alternate media in higher education for a couple of decades now, and I've observed that Cengage has come far with some of their products and accessibility, but I caution anyone who considers using any of the MyMathlab products. Be aware that there are often lots of inaccessible exercises and resources included with MyMath, MyStats, MyChem, etc. even though the publisher will tell you that it is all accessible.

For formatting your own content, I recommend MathType, publish to a MathJax supported mathpage for visual or screen reader use.

Good luck!

I don't know Equatio, but I am reasonably sure that the books over at Openstax (https://$1) might be of use.

As for screenreader support, you may want to install Mathplayer if you haven't already, this can make MathML formatted content work better with screen readers.

Not sure what age IXL goes upto but there is a speaker icon beside each question so it speaks the equation to you

I have the same problem. And I’m in college, my disability services counselor recommended Equatio for me I’ve been Messing around with it between semesters and it seems to work pretty good and they have a Lot of accessibility features.
You can dictate math or type it in.