Voted Best Answer
Aug 31, 2015 - 06:26 PM
1. Create a separate gradebook for each three-week unit for each group of students. These would separate gradebooks would be linked to the same section number for the course.
2. Have a single gradebook where you would duplicate the list of assignments every three weeks as new students are added and dropped from that gradebook at the appropriate time. This would show several add-drops throughout the trimester.