A general, filterable index for all (public) learning objects.

[abchugh]

features (filterable in isolation or in concert with each other) which are more or less doable now:

• Filter by type (example, problem, definition, etc. but also maybe slides? or video snippets)
• Filter by a given concept
• Filter by cognitive dimension

The filter for concept should ideally include three modes:

• The concept appears anywhere in the learning object
• The concept is annotated as a prerequisite for the learning object
• The concept is annotated as an objective for the learning object

There are also some wishes for further down the line that need not occupy any space in your brain right now:

• Filter "fuzzily", also including related concepts (e.g. if I filter for control structure, I also get things about loops or ifs)
• Filter by course (is used in / is defined in)

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Michael also wants a "shoppping cart" that is closely related to this:

• the authoring support (shopping cart) does not have to be restricted to instructors. Students might want to use that to configure "problem card stacks" with that.
• for quiz/homework authors a "shopping cart" would be great, where we can just select a couple of quizzes and get a list of source URIs (from which wer can make a quiz/homework assignment; if we are more ambitious, we could just generate the whole sTeX quiz/hw/exam or a quiz directly in ALeA (i.e. without recourse to sTeX)).

[abchugh]

Some relevant resources:
https://github.com/slatex/sTeX-React/blob/main/packages/api/src/lib/mmt.ts#L371
https://stexmmt.mathhub.info/:sTeX/query