request disable/enable button per exercise; also per-exercise timer countdown / disable after timer expires

[gweinberg]

Problem

Use case: In-class clicker questions.

Desire: To be able to disable a specified question (without disabling the entire lesson). [Because, for instance, a given lecture might have multiple clicker questions; I want to have a given clicker question have a time limit/be disabled after a certain time limit, without needing to disable the whole ISLE lesson.]

Option 1: An exercise-level disable/enable button for instructors.

Option 2: A per-exercise timer button for instructors, where instructors could, on the lesson, activate a timer countdown that would disable the exercise at the end of the countdown (and the students would see a timer countdown, with an alert something like, "You have [xx:xx] remaining to answer question [y]."

The two options should be combined, so that in lecture, question can initially be disabled; and with the question disabled, instructor should be able to set timer functionality (so that, for instance, "students will have 1 minute; timer will begin once exercise is enabled"), then instructor should be able to enable exercise, and students will then see the exercise with a countdown timer.

Advanced option (for TAs in different lab cohorts): The enable/disable and timer functionality could have a pulldown of different cohorts, so a given TA in a given lab could activate the functionality only for their lab section.

Solution

see above

Alternatives

Currently, to enable/disable a question without disabling the entire lesson, the only alternative would be using a gate; that's not as good because (a) it's not attached to a given exercise, (b) it's not customizable in the live lesson, it has to be pre-set in the code, (c) it doesn't give a countdown timer (also (d), I don't remember if the gate can be closed once it's opened)

Additional context

None.