Not leveling during timed practice?
I just finished strengthening skills during a timed practice. I got 18 out of 20 questions right, but I still didn't strengthen any of my decaying skills. This has been happening for a while now. At first I thought it was only because I wasn't getting many correct. But in the past I have only gotten 4 right and it has still strengthened skills. I've even had three skills strengthened after one exercise! Why am I suddenly not leveling up? If I click on a skill directly (say, past verbs 2) it works, but not if I choose the big strengthen Skills at the top of the page. Does anyone know about this or if it's a glitch?
copied from this post: https://www.duolingo.com/comment/3021897$comment_id=3034679
Timed Practice, like un-timed practice, usually gives you about 7 of your overall weakest words (not based on Skill). Sometimes, all (or most) of your weakest words are from the same skill, so when you strengthen these 7 words, you strengthen enough words from the same skill to strengthen that skill. Sometimes the words you strengthen come from different skills, or you had so many weak words in a skill that simply doing one Strengthen Skill exercise (timed or un-timed) isn't enough to strengthen the entire skill. Keep doing timed exercise, and eventually your skill will increase!
(Although I've seen a couple of discussion topics on 'Strengthen Skills' giving people odd words, or short exercises, so there could be something else going on)