oppia

In the exploration I linked, the only types of interaction offered to the learner were either ok/proceed, or 'answer this textual multiple choice question'. This may make it seem like Oppia doesn't do much more than software for interactive fiction. BUT Oppia has lots of other interaction types: https://github.com/oppia/oppia/tree/develop/extensions/inter... For example, you can input music notes: https://github.com/oppia/oppia/issues/4842 Or ask the learner to enter a fraction, or to sort some objects.

This is really cool, https://github.com/oppia/oppia Reminds me a bit of HyperCard. What is your interest in Oppia? I dabble in these things, but was thinking of working on some shared "decks" with my kid.

If you like this method of learning or of teaching, check out Oppia, open source software for building things like this: https://github.com/oppia/oppia The public site with existing lessons is here: https://www.oppia.org/library I'm not sure how socratease.in compares. But Oppia has some cool things like being able to set questions which require more than just multiple choice, e.g. requiring you to put a musical note in the right place on a stave.