Plugins extend WordPress functionality by allowing users to add various applications to their blogs or enhance aready existing WordPress features. Each blog has several plugins available for use. They are: KB-Gradebook, TinyMCE Advanced, cformsII, WordPress Download Monitor, Polls, and Ratings.
Most of these plugins can be inserted as widgets into your blog sidebar and will display sitewide. You can access the sidebar by going to your admin bar above each page, select a blog then go to Dashboard > Appearance > Widgets. Then you can add or delete widgets from your sidebar. I will make an individual post for each plugin detailing what it does and how you can use it.