In this screenshot I demonstrate the use of a video in Pane 1 and a document in Pane 2.  This method is extremely helpful for students to have a graphic organizer to follow along with while watching the video explanation of how to work a particular problem out.  I did not know the two panes were possible instead of four.  I am happy that this is a feature because it really helps during instruction to help the students focus on what I need them too.  I also see myself using the two panes as a note-taking guide while I am teaching so that students can follow along and not be lost.