Lover-division students are less committed to college and to a career choice and typically know less. Upper-division students are more committed and knowledgeable about both college and career. Allowing revision can make more work for the instructor, but it can improve student learning. Discourage revision that is mere exercise of the fingers. Other Hints Specify your criteria for evaluation as part of the assignment.
Check sheets can be useful for clarifying an assignment.
For example, have students rewrite an assignment that simply reports observations into one that generalizes from them. Try to provide a specific audience for the writing. Try to make every assignment count. That doesn't necessarily mean all must be graded or collected, but using them in some way can help students see the worth of the assignments. Any assignment help writing ability if students write in complete sentences, using their own words.