STACK icon

STACK

Maintained by Chris Sangwin, Tim Hunt
The STACK question type adds a sophisticated assessment in mathematics and related disciplines, with emphasis on formative assessment underpinned by computer algebra.
Price option: Free

Supports Moodle 3.5-5.2 See all versions
Latest release: 1 day ago
Installations: 2365
Downloads (last 90 days): 881

Frankenstyle name: qtype_stack
Question types
STACK

Comments

Product ratings and reviews are coming to Moodle Marketplace. Until then, existing comments remain available to read, but new posts have been disabled.

Evarist, please raise an issue on https://github.com/maths/moodle-qtype_stack and we can take it from there. You're the only person reporting this, so we need to dig a bit deeper and I have no way to contact you.
Other question types show the save and continue editing button but stack is not showing the button
Update broken??
Before i had this configuration:
$plugin->version = 2025012100;
$plugin->requires = 2022041900;
$plugin->cron = 0;
$plugin->component = 'qtype_stack';
$plugin->maturity = MATURITY_STABLE;
$plugin->release = '4.8.3 for Moodle 4.0+';
Than i Updated to this configuration with our moodle 4.5.1:
$plugin->version = 2025040100;
$plugin->requires = 2022041900;
$plugin->cron = 0;
$plugin->component = 'qtype_stack';
$plugin->maturity = MATURITY_STABLE;
$plugin->release = '4.9.1 for Moodle 4.0+';
All i get is a Server Error 500. Game Over. Any ideas on this? Anybody else had this issue? I reverted to my backup, not it runs again, but I Still get the same error while i initially tried to upgrade the code.
Some error logs. but apparently nothing with this plugins
{"log":"[Tue Apr 29 16:52:48.280023 2025] [php:notice] [pid 21:tid 21] [client 172.18.0.1:58748] Use of subplugins.php has been deprecated. Please update your '/var/www/html/mod/giportfolio' plugin to provide a subplugins.json file instead.\r\n","stream":"std> {"log":"172.18.0.1 - - [29/Apr/2025:16:52:48 +0000] \"GET /admin/index.php HTTP/1.1\" 500 234 \"-\" \"Mozilla/5.0 (X11; Linux x86_64)>
Yes, we will support newer versions of Moodle, and I hope to fix MDL-83541 for Moodle 4.4.7 / 5.X.
Hi! Will there be a new version available for Moodle 4.4.7 / 5.X which fixes MDL-83541 ?
Birgit, thanks for asking.
1. General developer discussion (not potential security issues!) https://github.com/maths/moodle-qtype_stack/issues
2. Contact the developers in private, then email me at C.J.Sangwin@ed.ac.uk
3. Community discussion, including help with particular questions (use not development) then https://stack-assessment.zulipchat.com/#
I hope we can help. Thanks for your interest in STACK.
Hi, I have got some questions ...
1.) Is there a place to bring ideas to the developer? Is https://github.com/maths/moodle-qtype_stack/issues the right place?
2.) Is/Are there Forum where to discuss the use auf STACK questions? Lets say I want to have a special kind of question and I need held as it does not works as wanted.
Thanks ... Birgit
I particularly appreciate the flexibility in question design, where teachers can create structured, random problems and provide detailed feedback that’s tailored to each student’s response. IPL betting ID
Good evening.
I start all my questions with a fpprintprec: 4 line but realized that the numbers showed truncated (for example, a value of 2.17691 showed 2.176). Would anyone be so kind to confirm that latest Stack version shows rounded numbers (for example, a value of 2.17691 now shows 2.177)?
I recently upgrade my Moodle to 4,4 version.
Best regards
PD: sorry about my English
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Thanks for reporting this Joel. Please look for updates here: https://github.com/maths/moodle-qtype_stack/issues/1240
Can anyone help me, I'm trying to update my STACK version to anything above 4.5 (I want to play with the new Geogebra options) I've tried using the installation process above and I'm getting:
There is a request to install plugin STACK (qtype_stack) version 2024072400 from the Moodle plugins directory on this site. However, this plugin is already installed on the site.
My current STACK version is 2023102700.
Current Moodle version is: Moodle 4.3+ (Build: 20231201)
Thanks in advance!
John,
I was looking at the Moodle mobile app requirements last week. We're considering it. I'm not exactly sure how much work it will be.
If you'd like to raise a request here: https://github.com/maths/moodle-qtype_stack other members of the community can voice their views. If there is significant demand we'll give it a higher priority,
Chris
Hi,
Nice plugin! Are there any plans to make the STACK question type compatible with the Moodle mobile app?
Regards,
John
John, I've encountered this problem occasionally depending on which version of Maxima you have. The very fist time Maxima runs on the server it loads a lot of text-based lisp code and compiles this on the server. That's all perfectly normal. STACK uses the "timeout" and if this is too low this crucial first execution will not finish. If you can, first load Maxima on the command line and execute a non-trivial command (e.g. diff(x^2/(1+x^2), x); then quit(); ) Then up the timeout on the plugin page and try again. If this works you can return the timeout to a lower level in production. If this does not work, follow these docs: https://docs.stack-assessment.org/en/Installation/Testing_installation/#troubleshooting-an-installupgrade