20/20 in the timed practice is not enough to strengthen a lesson?
Lately in my German=>English tree I am unable to 'golden' my finished parts. It started with 'Adj. 1' part, where several times 16, 17 or 18 good answers out of 20 were not enough to strengthen a level from 4/5 to 5/5 during time practice repetition. Today I did my timed practice repetition in 'V. Pras. 2' part and the result was 20/20 and it also was not enough to make change from 4/5 to 5/5.
I use desktop version and in my English=>German tree I didn't experienced such situation yet - sometimes even 14/20 was enough to strengthen a level.
Am I doing something wrong in my repetitions?
What is most likely happening is that there are too many words in that particular skill to be strengthened in one attempt. If you look at the amount of lessons in the two skills that you mentioned, they are two of the larger skills.
I personally have had this "problem" happen to me, and trying again worked every time for me.
Just do make sure that the skill you are trying to strengthen isn't already as strong as it can be. Duolingo won't tell you if you are strengthening an already strong skill.
Most probably there are words in the skill you can't strengthen by timed practice repetition. This happens sometimes with old trees with many changes. The only remedy I found, is to do the the lessons in the skill once more. Often the errors are in the last lesson, so doing them from back to forth may shorten the procedure.
Thanks for the prompt response. I have tried to make a 'regular' (not timed) practice and it allowed me to strengthen 'V. Pras. 2' even with 2-3 errors. We will see if it works also with the other part.