Minimal example for custom marking script

[Antony Edwards]

Hi,

I am hoping to write some questions that involve "give an example of <object> satisfying <condition>". I think that I will need to use custom marking scripts to make this work, but I would love to hear alternative options.

I was wondering if anyone either had any questions like this they could share, or some simple questions that showcase basic custom marking scripts. I was thinking along the complexity of:

1. Student enters two numbers in gap fills
2. Part is correct if the first number is greater than the second

or,

1. Student enters a 2x2 matrix
   
2. Part is correct if the matrix is non-singular

etc.

Cheers,

Ant.

[Julia Goedecke]

Dear Antony,
if you search for "accept any symmetric matrix", you will find a
question by Christian which does exactly this kind of thing, and you can
easily adapt the checking condition to det(studentMatrix)<>0

On 20.01.21 08:29, Antony Edwards wrote:
> Hi,
>
> I am hoping to write some questions that involve "give an example of
> <object> satisfying <condition>". I think that I will need to use custom
> marking scripts to make this work, but I would love to hear alternative
> options.
>
> I was wondering if anyone either had any questions like this they could
> share, or some simple questions that showcase basic custom marking
> scripts. I was thinking along the complexity of:
>

> 1. Student enters two numbers in gap fills
> 2. Part is correct if the first number is greater than the second
>
> or,
>
> 1. Student enters a 2x2 matrix
> 2. Part is correct if the matrix is non-singular
>
> etc.
>
> Cheers,
> Ant.
>
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Dr Julia Goedecke
Teaching Fellow in Mathematics
University of Leicester


julia.g...@leicester.ac.uk
0116 252 5352

[Christian Lawson-Perfect]

That question is at https://numbas.mathcentre.ac.uk/question/57718/accept-any-symmetric-matrix/.

The "How-tos" project is always a good first place to look: https://numbas.mathcentre.ac.uk/project/697/browse/

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[Julia Goedecke]

Wrong keyboard shortcut sent the email before I was finished!

Dear Antony,
if you search for "accept any symmetric matrix", you will find a
question by Christian which does exactly this kind of thing, and you can
easily adapt the checking condition to det(studentMatrix)<>0

https://numbas.mathcentre.ac.uk/question/57718/accept-any-symmetric-matrix/

The one with two gaps needs a bit more knowledge how to talk to the two
gaps, but this is also not so hard.

Here is one:
https://numbas.mathcentre.ac.uk/question/share/view/6b65474b-f103-464e-a0ce-86016e56e727

All the best,
Julia

[Antony Edwards]

Absolutely brilliant, thanks :)

I don't suppose there is a similar example with referencing gap-fill questions (I've checked on the list of "How-tos"). I think I would be comfortable doing this if I knew how the gaps were referenced in the custom marking script.

Cheers,

Ant.

[Julia Goedecke]

I sent one in the previous email, the link should take you there.

Julia 

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[Antony Edwards]

Thanks Julia, sorry I missed your second link.

Kind regards,

Antony.

[Christian Lawson-Perfect]

I thought there was an example of that in 'how-tos', but apparently not, so I've made one: https://numbas.mathcentre.ac.uk/question/87346/two-number-entry-gaps-first-number-must-be-less-than-the-second/

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