Given the size of the class and the number of homework problems per chapter, it is impractical to grade each problem in every problem set. Typically, three or four of the problems in a set will be chosen for grading. For each of these problems, the following rubric will be used.

Score	Evaluation

5	Problem completed correctly and results reported to the appropriate number of significant digits and with the correct units.

4	Problem appears to be worked correctly, however the final result is incorrect, is given with the incorrect units or to the incorrect number of significant digits. This may be the result of a minor technical error such as typing an incorrect value into the calculator.

3	Portions of the problem are worked correctly, but minor lapses in logic or understanding are evident.

2	A valid attempt was made at the problem, but multiple minor lapses in logic or a single substantial error in logic are apparent.

1	A poor attempt was made (something was written down), but no route to the solution was attempted. Little, if any, understanding of the problem was demonstrated

0	No attempt was made at solving the problem.

The sum of the scores for each problem graded will be recorded as the score for the homework set.