Hello Jean-Michel,

Let me ask you if, in addition to the "Part combined feedback (correct, partially correct, incorrect)", you could also include a "Part general feedback". Here's why.

My recipe for a complete feedback is now only possible for a single-part Formulas question. It would be nice if it were possible for every part of a multi-part Formulas question. Here is what could be the improved recipe:

- Give the first half of the solution in the Part feedbacks for correct, partially correct and incorrect responses. For a partially correct response, a message such as "Check units" can be added (by the teacher).

- Give the second half of the solution in the Part general feedback.

In this way, the same complete feedback is given to all students, regardless of whether their final response is correct or incorrect. However, only part of the solution is given as a hint for an incorrect response on the first tries.

Imho, it is important that all students get the same complete feedback as they proceed through the solution of the problem, i.e. through the several parts of the question, and also that they can refer to a complete feedback, depending on the review options, after the quiz is closed, for review and studying.

This is illustrated by the simple example below (problem type questions can be much longer):

QUESTION: Calculate the area, *A*, of a rectangle with sides *a* = 2 m and *b* = 3 m. Say only two tries are allowed.

*1st try, if the response is correct:*

- Part feedback for any correct response

To calculate the area, multiply the length of side *a* by the length of side *b*.

So we have *A* = *a* × *b* = 2 m × 3 m = 6 m^{2}.

*1st try, if the response is incorrect:*

- Feedback for any incorrect response

To calculate the area, multiply the length of side *a* by the length of side *b*.

*2nd try, whether the response is correct or incorrect:*

- Part feedback for any correct response or part feedback any incorrect response

To calculate the area, multiply the length of side *a* by the length of side *b*.

So we have *A* = *a* × *b* = 2 m × 3 m = 6 m^{2}.