Revealing question parts depending on students input

1 Initial Problem

Individual feedback in STACK questions helps students to better understand exercises. If question parts would reveal depending on the given answer it could give students better fitting help.

2 Conceptual Summary

Questionparts that reveal one after another. So that one part of the question does not open until the part before has been answered.
The possibility to open question parts on conditions would provide the opportunity of skipping parts. For example the result needs to be typed into ans1. Ans2, for an intermediate step, does only show if the answer before has been wrong.

3 User Interface Modifications

3.1 List of Affected Views

{Please list all views (screens) of ILIAS that should be modified, newly introduced or removed.}

3.2 User Interface Details

{For each of these views please list all user interface elements that should be modified, added or removed. Please provide the textual appearance of the UI elements and their interactive behaviour.}

3.3 New User Interface Concepts

{If the proposal introduces any completely new user interface elements, you might consult UI Kitchen Sink in order to find the necessary information to propose new UI-Concepts. Note that any maintainer might gladly assist you with this.}

4 Technical Information

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5 Contact

• Author of the Request: Eva Mix
• Maintainer: {Please add your name before applying for an initial workshop or a Jour Fixe meeting.}
• Implementation of the feature is done by: {The maintainer must add the name of the implementing developer.}

6 Funding

If you are interest in funding this feature, please add your name and institution to this list.

• …

7 Discussion

STACK-Feature - would need to be discussed with Chris Sangwin

“Note: The parameters to blocks in the question body may NOT depend on the student's answers. This means that you cannot reveal an input block based on student input, well not just by using an if/-block. But you may still adapt PRT-feedback as much as you want. Such adaptation requires persistent modifiable question state and is not currently possible in STACK, there is however work being done to create systems that would allow it.”
https://github.com/maths/moodle-qtype_stack/blob/master/doc/en/Authoring/Question_blocks.md

8 Implementation

{The maintainer has to give a description of the final implementation and add screenshots if possible.}

Test Cases

Test cases completed at {date} by {user}

• {Test case number linked to Testrail} : {test case title}

Approval

Approved at {date} by {user}.