On the calendar BGA1 stands for background animation for background 1. BGA stands for the background of 2...etc.
Learn what you need to apply to your animations.
Remember, it is required to have at least two things in your background or foreground animated (e.g. car driving by, sun rising, etc) but be creative. In addition to your character animations that are telling the story.
When you make your background animations you are not allowed to spend more than 45 minutes on average for each.
When you are finished with each, upload the file to the MF Picasa album and post that link to the spreadsheet. In the caption write your classID bg1. Then in the comment section below the image, write the type of shot, cut, or technique used.