A short quiz that asks again, in new ways, about what was hardest. Practising it again a week later helps it stick.
Under the button that makes a follow-up quiz: what it is, and why practising again a week later helps remember
Breve certamen quod iterum, novis modis, de iis quae difficillima fuerunt interrogat. Si post hebdomadem iterum exerceris, melius in memoria haeret.