[BlindMath] Suggestions for reference texts on mathematics with visual disability

[Sukriti Suri]

Hi all
I am planning to write a book on basic mathematics with topics like numbers, basic operations, mensuration, and comparison of quantities like ratio, percentage etc. Here are the features I want:
1. It should have a special focus on how to better communicate concepts to those with visual disabilities specifically those topics which involve shapes etc.
2. It should be a self-contained text for persons with visual disabilities with easy, moderate and hard exercises.
3. It should have instructional notes for teachers to enable them better explain the concepts to persons with disabilities.
Accordingly, I have following questions and requirements:
1. Is there any book of this sort earlier. If so, mention the name, please.
2. Book recommendations for basic maths wherein reallife examples are provided and emphasized.
Any experiences for any topic you wish to share. That would of course be duely acknowledged.
SUKRITI SURI