According to the 5Js, technology-related teacher professional development should be:
job-related, focused on the core competencies of the classroom, not technology
just enough, emphasizing increased comfort, not proficiency, with computers and management of limited technology resources
just in time, meaning teacher are provided with skills as and when needed
just in case teachers need to plan for contingencies
accompanied by a "just try it" attitude, wherein instructors apply both pressure and support to compel teachers to use what they've learned.