I had to write a post about this site. For anyone wanting to know more about AT and more importantly more about how AT applies to different academic areas this site by
Great Schools is a wonderful place to visit.
They organize their site into categories that make sense to educators and parents. First you look at
What types of learning problems does assistive technology address? Then you visit What kinds of assistive technology tools are available? After you can see how students are profiled and finally visit different or other forms of AT that might not have been listed in the provisos categories or links. Take a look.