Can we add a feature for learning cases and declensions separately from the sentences?
This might be a good idea: We could be asked to fill in spaces in a declension table, for example.
There is one, if you go to the web version and click on a lesson, there is a lightbulb, click on that and you'll get notes involving whatever grammar is taught during the lesson.
I'd love a seperate conjugation and declension trainer on duolingo for a lot of languages.
Until we have to make do with external sites like these:
For something more detailed - although a useful reference tool rather than a learning tool:
And for Latin verbs: