<OL>
<LI><B>No grading:</B> In this type of assignment the teacher is not
interested in quantative assessment from the students at all. The students
- make comments of the pieces of works but not not grade them. The teacher,
+ make comments of the pieces of works but not grade them. The teacher,
however, can, if desired, grade the student comments. These
"grading grades" form the basis of the students' final grades.
If the teacher does not grade the student assessments then the assignment