I've run into a problem that I imagine most Duolingo users have run into at some point in their language learning experience.
Assume I'm in the process of reviewing already learned vocabulary (as shown in the image above). Say I can remember the definition of Unser and Kind, but not spielt. If only I had the definition of spielt so I could learn it for next time...
See those dotted lines under each word? By touching (or clicking) each word with a dotted line under it, Duolingo tells me the definition of the word, so I can use this to complete the activity.
This is where my uncertainty comes in. Every time I don't know the definition of a word, should I get the definition by clicking on it, or should I simply do my best? (If you get an activity wrong, then Duolingo tells you the correct translation, so I'll learn the meaning of the word in question anyway.)
This problem just comes down to positive vs. negative reinforcement in Duolingo. Should I use Duolingo to get the definition of a forgotten word, or should I get the activity wrong to learn the correct translation which has the definition anyway? Or is there no difference at all?