Suggestion re Vocabulary
When I loose a bar in a vocabulary lesson there is not indication on the top level. Example Adverbs->Lesson 2 shows that I have lost a bar. I will not find out unless I click on adverbs and take a look.
I would appreciate being able to look at the vocabulary page and know which sections require lesson refreshments.
I really don't mind going back over these lesson since it should increase the retention of vocabulary.
Many thanks to Duolingo.