Record attendance for each student whether they are present, late, absent, or excused.
Online Attendance is a great way to keep track of which students are attending class. This will not only show the instructor the records of each student, but will show the student of their own attendance.
Unfortunately this tool has been discontinued.
You may create a manual column in the Grade Center called Absences and set the Points Possible to 0. Make sure not to include this column in the Total Grade Center calculations. For every time a student is absent, you may increase the number by 1.