The grading scheme in the case when hints are involved can be confusing. The grading policy says you "get credit for correctly answering a question in a Hint," but it also says you lose credit if you exhaust your answers or request the answer to the Hint. But, how does this work exactly?
Here are some texts from the MP help file, for you to read through and understand, in case this is still a mystery. Some points worth knowing are: (1) if you do not open hints at all you get 2 % bonus, (2) if you open hints but simply read them without submitting any answers, there is no penalty and no bonus (as long as your answer to the main part is good, I think), (3) if you open a hint and submit a solution to that hint, then that hint becomes part of the problem, weighed equally as any other part, (4) if you request an answer to, or exhaust the allowed number of tries for, a hint or the main problem part, then you lose points.
I hope this gives you some ideas, while it may seem (to me also) at times that it is impossible to understand the scoring system.
MP help texts below this line.
--------------------------------------------------------------------------------------------
For example, suppose a problem part has:
| ▪ | 3 question hints, each with 1 question to answer |
| ▪ | 1 final answer |
Case 1:
Student answers all hint questions correctly and also gets the final answer. Each hint question counts for 1/4 of the possible grade. Student has answered 3 hints and the final answer correctly, for a total of 4 out of 4. Student gets 4/4, or full credit.
Hint 1 | 100% |
Hint 2 | 100% |
Hint 3 | 100% |
Main Part | 100% |
Part Score | 100% |
Case 2:
Student opens hint 1, answers it, understands how to work the problem, doesn't bother with the other 2 hints, goes right on and answers final question correctly. The student has correctly answered 1 hint and the final answer, and gets credit for having answered the other 2 hints correctly because the final answer is correct. 4/4, or full credit.
Hint 1 | 100% |
|
Hint 2 | 100% | not answered; 100% because main part is correct |
Hint 3 | 100% | not answered; 100% because main part is correct |
Main Part | 100% |
|
Part Score | 100% |
|
Case 3:
Student opens hint 1, answers it correctly, goes directly on to final answer but gets that wrong (without exceeding the number of allowed answers). Student then goes back, opens other hints, and works them before succeeding in answering the part. Student eventually gets 4 out of 4 answers correct, for full credit.
Case 4:
Student answers all hints correctly but exceeds the number of allowed answers for the main part without answering it correctly. Student gets 3 out of 4 answers correct, for 3/4 credit. (This is a rare case; most students who answer all the hints correctly will get the final answer as well.)
Hint 1 | 100% |
Hint 2 | 100% |
Hint 3 | 100% |
Main Part | 0% |
Part Score | 75% |
Case 5: Deferred credit
Student does not answer the main part correctly, does not exceed the number of allowed answers, but works 1 or more hints correctly. When the assignment is due, student does not get any credit because the main part has not been answered. (Remember: the main part must be answered.)
| ▪ | However, if the professor gives partial credit for late work, the student can go back anytime until the end of the course and continue working for additional credit. |
Case 6: The only case in which student is guaranteed to lose credit:
Student requests answer for a main part or a hint.
| ▪ | If student requests answer to a hint: The student gets no credit for the hint even if the main part is correct. |
| ▪ | If student gets some hints right, but requests answer to the main part: The student gets credit for those hints, but not for the main part. The student gets no credit for any unanswered hints. |
Student is not allowed to request the answer to the main part before opening at least one hint.
After the entire item has been completed, the student's total points are divided by the maximum points for the item equal to:
Max_points = number of main parts
This ratio is their score for the item, and can be greater than 1 if the student got mostly correct answers without using any hints and the hint bonus is on.
No comments:
Post a Comment