John F. O’Sullivan is a Librarian, an Assistive Technology Specialist and author of several books on educational technology. His books include The Educational Technology Guide 2018, The UDL Educational Technology Guide 2018, UDL Technology, The Teacher’s Awesome App Guide, and Teaching Projects with Computers. John currently holds four certifications in education and has taught under each. He has worked in the past as a Special Education Teacher and Technology Integration Specialist. John works for Chelmsford Public School at Chelmsford High School.