preventing decay, restoring decay
I am very glad that duolingo has sections decay after a short amount of time, because revision is essential to keeping the language active.
However, I have a few questions about how this works:
What can I do to prevent units from decaying? Do I have to go into the unit and revise all the lessons? Or go into the unit and "Practice Skill"? Or will "Practice all skills" on the home page prevent decay?
To restore decayed lessons, do I have to do those lessons? Or will other options (as above) work?
Does the decay period increase for lessons which have decayed and been reviewed several times?
Thanks for any information!
On the web site (not the app) home page click on "vocabulary" at the top of the screen. The click on a word that is not at full strength. On the right side there should be two buttons, one to practice the word, and the other the remove it from the list of words to practice.