Talk:World of Math - number of skills/@comment-25143095-20140925005733/@comment-3388158-20140925051938

Unfortunately "Arc length of functions in one variable" still has an error in one of the exercises. I reported that a while ago, but now it is blocking me to get that into the mastery challenge :-(

I have reported over 5 errors the last 2 weeks where answers were not accepted, some of them in multiple choice questions where none of the answers were accepted.

The rounding in the attached picture in one of the Integrals exercises is also wrong (should be 1.238 not 1.278).

KA should focus more on quality then on quantity, or at least check that all bug reports against exercises are fixed before putting them in the mastery challenge tombola. Currently if you are lucky and don't get a blocking exercise as part of the minimum of 9 exercises (out of 20+) you need, you can get to mastered a subject, and if you are unlucky you cannot proceed at all as the blocking question comes back again and again.