The progress bar is presented next to each interactive item (PreLectures, CheckPoints, Homework), so you have a clear means to gauge progress. The red/green bar measures your progress through the item and how much credit you've received.
- Bright green represents the points that have been awarded.
- The white region represents points you can still earn (but you have to complete the activity to earn them).
The red bar represents points that can no longer be earned (e.g. if you completed an assignment after the deadline had passed).
If you hover your mouse pointer over the bar, you'll see a notation related to the graphic display, such as "Your current score is 33.3%" to provide further clarification.