New exercise suggestion - Corrections
Often times I find myself making smaller grammatical mistakes rather than big a one, getting the big parts like word selection, verb, and order, but then messing up because I used the wrong gender, plural, or worse, just forgot to shorten 'de le' to 'du' or other substitution.
Can we please get exercises similar to "There is/are # error(s) to correct"? This would allow us to train us to help self-correct these simpler language errors inside a more complex context. It might also be very helpful for testing all the various forms of some contractions. I know french is full of these annoying one-offs and I'm sure most other languages have similar contractions.
It might be hard to implement a system to count errors, but it would be easy to detect if an answer is not in the database and then give a message like "That seems wrong would you like to try it again?" I'd love that feature because I also make an insane number of dumb mistakes.
I agree with rocko2012. I think Duolingo wants to avoid exposing us to improper language. One of the methods they use is repeated exposure to certain grammar patterns, so that when you see it used in a different context you can apply the prior pattern and get it right.
The problem with your idea is that it would expose users to errors that they may not themselves commit, and thereby, they would be practicing errors and creating them for themselves.
But, I feel your pain. I hate losing hearts for silly errors. I like rock's idea of "giving one another chance if the computer detects a simple error." Maybe, we could "spend" our coins on a second chance "potion" for a lesson. I know of several lessons that I could really have used several second chances on