This is an on-line discussion forum called Interactive Cyberclassroom.
The contents frame shows the titles of all articles posted to the discussion. Selecting a title will cause the corresponding article to be loaded into this frame. A frame shows more than one page on screen. Here are other examples: What are Frames - Classroom Example
You may also:
In addition, each article has links to let you reply to it (continue the thread) and navigate the article list.