[susan53]

There's not much out there. If you google ESL developmentally disabled one of the things that comes up is this post! But try it - there are a few things on the page which look interesting.

I wouldn't normally link to sites outside this one, but given the reason for the request, I hope Eric will forgive me this time . The site English without Frontiers provides a course (syllabus, materials, T's notes etc) etc designed for the types of learner you describe. There's a small cost for the paper version or a free online version.