You helped me to make changes in my both resume and a cover letter. 

My intention: I wanted to find out if I am asked to summarize it in a short paragraph.  Is the following OK or do you have any suggestion?

I am an Assistive Technology (AT) Specialist with experience in providing AT consultations and training to universities, local organizations, and the Department of Disability Services. My areas of expertise include conducting assistive technology evaluations and developing instructional materials with digital and media technologies. I conduct exhibitions and workshops at conferences. My previous background includes extensive experience in R&D and IT where I engaged in numerous projects, training, performance improvement and testing.