Formulas question type

Question types ::: qtype_formulas
Maintained by Picture of Dominique BauerDominique Bauer
This is a question type plugin for Moodle with random values and multiple answer fields.
Latest release:
1309 sites
50 fans
Current versions available: 2

This is a question type plugin for Moodle with random values and multiple answer fields.

The answer fields can be placed anywhere in the question so that we can create questions involving various answer structures such as coordinate, polynomial and matrix.

Other features such as unit checking and multiple subquestions are also available.

These functionalities can simplify the creation of questions in many fields related to mathematics, numbers and units, such as physics and engineering.


Screenshot #0
Screenshot #1


Picture of Dominique Bauer
Dominique Bauer (Lead maintainer)
Jean-Michel Védrine: Former maintainer
hon wai lau: Original creator
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  • Fri, Jun 12, 2020, 6:22 PM
    is it possible to assign a negative feedback to a wrong answer, as for example in the multiple choice question?
  • Thu, Jun 25, 2020, 5:27 PM
    It is great to hear that the plugin got a new maintainer, Dominique Bauer. I expected his works would keep the plugin alive, and this would benefit for many teachers and students.

    It takes years of my work to finish the core part of the plugin, and many more years of work from Jean-Michel to port and maintain it in the new version of Moodle. Let me take this time to thank him for his great work again.
  • Wed, Jul 29, 2020, 4:54 AM
    Can I install formula's plugin on Windows server ?
    I requested the installtion of stack plugin previously , but turns out It isn't supported on Windows .
  • Wed, Jul 29, 2020, 11:01 PM
    Does the relative error variable in grading criterion accept "== 0"? We tested a simple multiplying and division question with the Number answer type, and the correct answer was marked as incorrect in the preview window - seemingly randomly. The problem vanished when we switched the grading criterion to "Relative error < 0.001" or "Absolute error < 0.000001. Is this a bug or working as intended?

    The random variables we used were:

    The global variables we used were:
  • Fri, Nov 6, 2020, 7:51 PM
    Thanks so much for this great plugin! Might I suggest two features?
    1) It would be great to have a function to return the number of significant figures of a number.
    2) To me, it would be helpful to fix an absolute number of points to be deducted in case of wrong units instead of a relative amount.
    Thanks for considering..!
  • Sun, Nov 8, 2020, 9:46 PM
  • Sun, Nov 29, 2020, 11:45 PM
    I have switched to Marklar editor in order to properly save JSXGraph code in Formulas questions (it gets overly sanitized by Atto HTML editor). Strangely, Markdown input does not seem to get parsed as Markdown but rather HTML in Formulas questions, whereas it is parsed as Markdown in other activities. Can you confirm this?
  • Fri, Jan 22, 2021, 4:29 PM
    It would be useful to integrate the script that resizes text boxes while users are typing (see in a new version of the plugin. Maybe with a check box in the question creation form : Auto resize (Yes/No).
  • Sun, Jan 31, 2021, 10:53 PM
    I would like to make a small suggestion for a future version: It would be nice to select scientific notation for the correct result, which is shown as feedback.
  • 2018-2019
    Mon, Mar 8, 2021, 12:12 PM
    I was trying to look up how to resize the answer box on the site and the login appears to be stuck in a loop. Could you please check this. Thanks!
  • Mon, Mar 8, 2021, 5:05 PM
    Hi guys,

    first of all: This qType is amazing! I came across this qtype just recently and I am currently migrating all of my static questions to the formula type.

    However, I just experienced an issue while trying to regarde a quiz. After the quiz was taken by the students I realized that I was to strict in terms of rounding tolerance. So I modified the "relative error" setting in the question and performed a regrading. However, the regarding shows no effect on the automatic grading nor the display of the "correct answer" (also adjusted). Do I have to reset or change any other setting to impact the marking in the regrading process?

  • Wed, Mar 10, 2021, 2:26 PM
    It seems that when the answer is a number answer, any text (non numeric for exemple) should show an alert. It's usefull for the comma decimal alert for french people...
    But it seems that it doesn't work anymore.
    - Tested on your site (and mine) :
    - Tested on Firefox and Chrome
    When in the answer box you write something else than number, no alert shown and aswer considered as wrong.
    Did I misunderstood ?
  • Sun, Apr 18, 2021, 1:44 AM
    At school we use formula question type in our moodle 3.4 version. Just a couple of weeks ago we have gone up to moodle 3.9 and i am finding and issue that i cannot find how to solve. Before, when the student wanted to answer a question if the format he was using wasn't correct, a little red triangle would appear right at the end of the answering box and that was very useful. Example: student trying to use comma instead of dot for decimals, using "o" instead of "0", forgetting to write the units, etc. Well, all this doesn't seem to work at moodle 3.9 version. ¿Could you kindly help me? Really thankful.
  • Sun, Apr 18, 2021, 1:58 AM
    Hi again.
    Just saw that what i have found reported is also been reported as a bug but it is still no resolved.
    See in bugs tracker: Plugins CONTRIB-8421, QT_Formulas: Input Validation
    Hope you can fix it soon.
  • Sun, May 9, 2021, 5:04 PM

    Would you mind having a look at my PR #26 on GitHub? It adds functions for statistics (normal distribution cdf) and number theory (modular exponentiation and modular inverse) and would make the plugin even more useful for quizzes in statistics or cryptography classes.

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