Audio feedback

I am using Google voice to get ongoing feedback from my general Biology class.  We are
covering some challenging topics, so I asked (...assigned) them to call or text my # and let
me know how they were "getting" our current unit.  Any topic still "fuzzy"? How's the pace? etc.
I've received great feedback - I can pinpoint which topics to revisit, and which ones have been
mastered.

Audio Project Idea Galakatos

I would like to have students send me audio commenting on what they understand most/least about an upcoming unit.  So far, I have only used Audioboo to add an audio explanation to a video post.