I use a texture key. Yes, there are at least 3 print pages of Algebra tile activities at the end of each chapter. Usually about 10 braille pages. I've been working on these for awhile and now I'm wondering if a single TN about the colors is enough, since I had to write myself a key as I'm working so I don't get mixed up. Do you think I should do a duplicate key opposite each braille page? It's seems like a lot of information to keep in your head for 10 pages and some of the arrangements seem awfully complex.
Otherwise, it's going pretty well with the suggestions you gave me, thank you!