Subtext is a free app for the iPad that can take books, PDFs, and Web Articles and transform them into a collaborative and social environment for your students. Using an Edmodo, Google, or Renaissance Learning login, you can create classes/groups for your students to join with their own accounts and group code.
There is a beta version of Subtext for the web, which would work well for BYOD environments. Currently, it only supports using Web Articles, but more features are being developed.
There are free, public domain books that can be found for your students to use, such as Feed Books.
Jack Leonard, from Heritage Middle School, uses Subtext in his 7th grade ELA classes. Watch below for how it has impacted learning in his classroom.
If you are viewing this in email, you can click this link to watch the video.