Grading Scheme   (compiled from the grading exercise)

5: correct answer
      full explanation
      shows understanding of the question
      all work shown
      answers all parts of the question
      easy to follow

4: shows understanding of the question
      may have a minor mathematical error(s)
      may lack a bit of explanation or miss a step
      answers all parts of the question

3:  on the right track but had some mathematical errors
      (wrong answer but shows mathematical understanding)
      some work shown
      answers most parts of the question

2:  shows some understanding
      may have serious mathematical or conceptual errors
      some work shown
      answers some parts of the question

1:  attempted the problem
      may have answer with no work shown
      may show work with little logic or understanding
      unclear or incomplete
      gives little explanation

0:  assignment is missing