This article lists and explains the different communication tools here at RPI
Blogs make it possible for one student to create an online journal entry, while other students can comment on those posts to give feedback. Conversations between the original author and the commenters can be held within the comment section. New entries appear in the sequence of when they are added.
A discussion board is an online forum for holding discussions and posting content in threads within the forum by users (students and instructors). Messages in discussion boards are displayed either in chronological order or as threaded discussions.
Users can have their overall participation in a forum graded. A forum is an overall topic that is to be discussed. This option creates a column in the Grade Center and requires a Points Possible entry when the forum is created. Users can be graded on a Thread-by-Thread basis. A thread is a sub-topic in a forum. This option creates a column in the Grade Center when the Discussion Board manager creates the thread. If threads are graded, members cannot create new threads.
A journal is a blog provides a personal writing space for students to self-reflect and have private communication with the instructor.
A wiki is a collaborative content item that allows the creation and editing of unlimited interlinked webpages. Anyone with access to the wiki can edit it. A wiki is a website comprised of one or more pages that allow different users to add and edit content collectively. New pages can be added to the homepage and linked together.