It’s actually a really fascinating learning technique involving “active recall” and “spaced repetition”.
There is research backing both of these as some of the best ways to study and learn.
Basically, you making your brain think about the answer and solve it itself will help you remember. “Recalling the answer”, which is used for flash cards and quizlet.
Since this is an app that is for the general public, they try to teach in a way that is evidence based as the best way to learn.
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