The resource has a great technology tool with great plans and intentions for use. The need is well stated for dropbox and the advantage to use it is stated in the lesson plan.
This resource provides a solution to a need. The lesson is intended for adults in an educational setting (public school district, it may even help a college or university). Providing detail on what DropBox can do, how it can be applied to share files, and alleviate problems and improve communication and collaboration is well stated with this application and lesson.
The author of this lesson plan was able to incorporate UDL into the lesson, such as providing one on one training, sharing a questionaire on google docs, a link to a camtasia movie, and providing closed captioning to the movie.
Overall, this a great lesson plan and provides a great solution to a need.